WO1997014940A1 - Acoustic signature analysis for a noisy environment - Google Patents
Acoustic signature analysis for a noisy environment Download PDFInfo
- Publication number
- WO1997014940A1 WO1997014940A1 PCT/US1996/016131 US9616131W WO9714940A1 WO 1997014940 A1 WO1997014940 A1 WO 1997014940A1 US 9616131 W US9616131 W US 9616131W WO 9714940 A1 WO9714940 A1 WO 9714940A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- addition
- filter
- sounds
- signal
- sensing
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H3/00—Measuring characteristics of vibrations by using a detector in a fluid
- G01H3/04—Frequency
- G01H3/08—Analysing frequencies present in complex vibrations, e.g. comparing harmonics present
Definitions
- This invention relates to acoustic signature analysis of devices and things such as transmissions, body structure, frames, industrial machinery, and any other item with a sonic or frequency signature.
- test apparatus is of a specialized design which somehow must be totally reconfigured or even replaced in order to test varying devices or items.
- object of this present invention to provide for an acoustic signature analysis of assembled devices or mechanisms. It is another object of the present invention to reduce the cost of acoustic signature analysis.
- Figure 1 is a block diagram of the test procedure of this invention
- Figure 2 is an expanded block diagram of the preferred test procedure of the present invention
- Figure 3 is a drawing of a typical signature analysis curve for the particular preferred embodiment described in this application
- Figure 4 is a side view of a test stand for the preferred particular embodiment utilized in describing the invention herein.
- This invention relates to an acoustic signature analysis device and method, particularly suitable for use in a noisy environment such as a factory.
- the mechanism will be described in the atmosphere of a test procedure for a MTD transmission having forward and reverse gearing between an input shaft and two output half shafts.
- This transmission is described in the U.S. Patent 4,903,546, the contents of which are incorporated herein.
- test stand including a sensor 10, a preliminary filter 20, a rectifier 30, a secondary filter 40, and a compare to reference means 50.
- the sensor 10 is designed to sense and transform any noise and/or vibration from the device or mechanism (here in "device") under test into an electric signal for further operations thereon. It is preferred that the sensor 10 have qualities including frequency bandwidth and range of sensitivity sufficient to produce an output able to be utilized in the rest of the operative procedures. These qualities further could be optimized for a given application even though an uneven signal is resultant.
- the sensor 10 is a calibrated microphone having a 20 hertz to 20 kilohertz frequency range. It should be noted that this particular microphone has a frequency range in excess of that actually utilized by the remaining steps of the test procedure (as later set forth its range could be 500 to 5,000 hertz).
- the output from the sensor 10 is first preferably examined for out of range random results in order to discard deviant samples.
- This override loop is able to ignore random input signals that are the result of extraneous factors such as the general factory environment (tow motors, presses, forging machines et al) . Further, there are multiple samples taken for a single device with averaging or combining of samples occurring in order to reduce random noise further. The sensor 10 thus responds to repeating signature with random signals being effectively ignored.
- the preliminary filter 20 is utilized to restrict the output of the sensor to frequency ranges related to inherent structural characteristics of the particular device under test. This provides the maximum signal to noise ratio while at the same time minimizing background noise.
- the preliminary filter further is utilized to reject frequencies or vibrations which are not necessary for the overall test procedure. For example, in the transmission of the particular preferred embodiment disclosed, it is recognized a frequency range from 500 to 5,000 hertz would be adequate to test the desired parameters of the particular transmission disclosed with a maximum signal to noise ratio while at the same time maximizing background noise immunity.
- the preliminary filter is also utilized in order to reduce the requirements and/or cost of the remaining components. For example, a filter of 10 kilohertz would cut off everything above this frequency, thus serving as an anti-aliasing filter for a digital circuit which would only need a 20 kilohertz sampling rate due to this preliminary filter (rather than 40 kilohertz plus otherwise needed for a 20 kilohertz input signal) .
- the filter preferably also eliminates the frequencies which were unnecessary for the analysis of the particular device being analyzed typically high frequencies but could be others.
- the filter can be occasioned by a limited bandwidth amplifier (occasioning similar results by not raising the signal level of undesired frequencies) or by alternate means isolating the desired signal components.
- the signals necessary for analysis might not be within the frequency bandwidth of ultimate examination.
- the preliminary filter 20 removes frequencies below 500 hertz.
- the harmonics of repeating signals below this cutoff remain on the operative signal.
- the secondary filter 40 therefor examines the modulation of the available 500 hertz to 5,000 hertz signal to ascertain harmonics and sideband levels in the desired range (0-200 hertz utilized) . This use of analysis of what is in effect a higher frequency carrier to determine repeating signals within the desired range thus emphasizes the distinction between the signals necessary for analysis and the signals (which may have to be recreated) that are examined in respect to the desired test parameters.
- this secondary filter is a 0 to 200 hertz filter, a frequency range which is related to the rotational components of a the transmission under test: for example certain test frequencies - a spur gear frequency range of from 20 to 40 hertz and a bevel gear limit from 160 to 180 hertz (together with a low range and base line limit later described) .
- the signal After the signal has been full wave rectified, it is passed to a secondary filter 40.
- the resultant signal provides important information related to rotational components of the device under test.
- the secondary filter 40 also minimizes the data collection requirements.
- FFT Fast Fourier Transformation
- This analysis is specifically designed to look at frequencies which are related to rotating components in the transmission. The particular analysis components can and should be adjusted to provide flexibility.
- the signal from the preliminry filter 20 is passed through a full wave rectifier 30. After the signal has been so rectified, it is passed to a secondary filter 40.
- the resultant signal provides important information related to the rotational components of the device under test.
- the secondary filter 40 also minimizes the data collection system requirements.
- the signal from the secondary filter 40 is then passed through a Fast Fourier Transformation (FFT) to determine the frequency content of the signal.
- FFT Fast Fourier Transformation
- references are determined in order to provide for the testing of unknown devices while producing results indicative necessary parameters of the construction of such devices.
- these references are sufficiently defined to represent the desired qualities of the device under test. If the device under test is within the limits of the references, it passes the analysis. In the particular preferred embodiment disclosed there are four references: these are a) the low frequency limit, b) the spur gear limit, c) the input bevel limit, and d) the base line limit (figure 3) .
- the low frequency limit is used to check the condition of the differential gears and the output shaft of the transmission.
- the spur gear limit is used to check the condition of the intermediate shaft spur gear.
- the input bevel limit i ⁇ used to check the condition of the input bevel gear mesh.
- the base line limit is used to look at all frequency bands other than the ones described above to provide for an overall noise and vibration limit check. Other numbers and types of limits would be appropriate in testing other devices.
- the extent of the limits can be modified on line in order to adjust the respective limits in real time. This is preferred in that it allows the manufacturer to change the testing parameters for the device if he so desires or if the facts so warrant.
- Figure 3 shows changeable levels, the bandwidth and center frequency of the test parameters could also be changed.
- figure 3 shows three frequency centered limits:, any number could in fact be provided - especially in the software driven digital example of figure 2.
- Figure 2 discloses an embodiment wherein all of the processing and analysis of the output of the sensor occurs within in a digital form, in the preferred embodiment disclosed, all within a computer 200 (although the parts could be otherwise housed) .
- This use of a digital computer allows for the invention to be modified for different apparatus through either input of different variables into software (preferred) and/or by reprogramming or replacing the computer software.
- the various parameters could be adjusted from a set of input data which define the parameters for the various procedures of the invention. Examples of this would be the frequencies, levels, and bandwidth of the digital filtering, the extent of the rectification, the limits of the secondary filtering, the parameters of the FFT analysis including the frequencies examined together with their bandwidth and limits.
- the software could be rebooted in a program with different parameters (possibly even a different program) to produce optimal results. This again would define the various parameters to optimize the test procedure.
- the sensor 110 in the digital version is chosen in order to measure the desired sonic qualities of the device being tested. This has been previously described in respect to sensor 10 of the generic figure 1.
- all of the remaining components of this Figure 2 are preferably located within the computer 200 (they could be located otherwise including individually also) .
- These include an anti-aliasing filter 160, an analog to digital converter 170, a digital filtering 120, conversion to alternating current 180, rectification 130, a secondary filter 140, and fast fourier transformation analysis 150.
- the anti-aliasing filter 160 is used in the digital format in order to eliminate errors which might occur due to the sampling frequency in respect to input signal frequency (it is not needed in an analog test device) . It is preferred that this filter cut off the signal at less than 1/2 the chosen digital sampling rate in order to avoid this error.
- the input frequency(s) necessary to test the device is first determined, then the sampling rate is determined to be over twice this frequency, and only then is the cut off of the anti-aliasing filter determined.
- the reason for this is that certain signal information must reach the remaining steps - and too low a filter cut off may eliminate some of this information prior to processing.
- the parameters would preferably be selected or optimized based on the most demanding application for the machine, leaving lesser devices with excess test capability) .
- the data is analyzed at a 20 kilohertz sampling frequency and a 12 bit data.
- the anti-aliasing filter 160 has a corresponding 10 kilohertz cut off frequency.
- the filter 160 is mounted on the interface board between the sensor and the digital data bus and is a module made by Analog Devices. (Note that as previously set forth in fact only 5 kilohertz of signal information is needed. For this reason, a 10 kilohertz sampling frequency and 5 kilohertz anti-aliasing filter could have been utilized to test this particular transmission.However, for adaptability higher frequencies are being utilized) . Note also that if the device was processing high frequency information from the sensor 110, for example, 50 kilohertz information, the sampling rate of the computer and the anti-aliasing filter would also have to be adjusted accordingly.
- the signal passes to an analog to digital converter which converts the analog information into digital data for subsequent processing.
- the frequency of digital sampling and the amount of bits of data is chosen in view of the overall frequency which need be analyzed.
- the type of digital sampling is not critical. Pulse width modulation, pulse density modulation, and other digital sampling systems could be utilized, as could various bit schemes such as oversampling.
- the conversion occurs at a straight 20 kilohertz with 12 bit data accuracy. (Again higher than actually needed for the transmission disclosed under test but much less than that that could be provided with alternate digital techniques) .
- the digital information from the analog to digital converter is filtered by the digital filter 120. As with the preliminary filter 20, this is primarily band pass filtering to filter out mechanical noise and random noise (mostly frequencies below 500 hertz) .
- the low frequency filtering gets rid of non-repeating or random structural influences such as the test stand, forging equipment, etc.
- due to the inherent accuracy of digital filtering it would be possible to program the digital filter with many very limited bandwidths centered around very specific frequencies in order to more precisely test the desired signals.
- the digitally filtered signal is passed to an alternating current conversion mechanism which serves to remove any DC component on the digital data.
- the nature and extent of this conversion is not critical as long as the subsequent steps are adjusted accordingly (for example zero base line AC or mid point base line AC) .
- the alternating current is then rectified. The purposes and advantages of this has been previously been discussed in respect to the rectifier 30 of figure 1.
- the rectified signal is then passed to a secondary filter 140. This secondary filter performs the same function as the secondary filter 40 of figure 1.
- the signal from the secondary filter is then passed through fast fourier transformation analysis
- FFT 150 This analysis is specifically designed to look at frequencies which are particularly pertinent to the particular device being tested - in this case load monitoring of a transmission which is not connected except a motor at the input shaft (actual test procedures later described) .
- the particular analysis parameters can again be adjusted so as to provide for suitable testing parameters of the device under test.
- a typical test envelope is shown in figure
- this device includes a low frequency limit, a spur gear limit, an input bevel limit, and a base line limit, all of which can be changed in real time. Further, the particular signal that is then undergoing analysis can be viewed in real time on the spectrum viewer along with the particular limits which have been set for the test machine. Further to the above, in this digital embodiment, all of the test results can be saved in a storage module 190 for future use. This allows the user to acquire, store, and maintain performance data of the devices under test for future reference and/or analysis. It further allows a manufacturer to record an item number for each device in the storage module such that by reference to this item number identification of the device, the particular pertinent test results can be retrieved from storage. In the particular embodiment disclosed, the storage 190 is an optical storage disk. Other forms of storage are also possible.
- the invention of the present application is suitable for testing any mechanical or other device which has sonic properties.
- These include diverse items such as the transmission of a lawn mower (as disclosed in the preferred embodiment) , a helicopter main bearing, an entire automobile, steel I beams, roadways, and any other item which has a sonic or frequency signature.
- a transaxle 200 is manually or automatically located in position in respect to a test fixture.
- a transaxle locking cylinder 211 extends its piston 212 to lock the transaxle 200 in a retention fixture 215.
- the spindle actuator 216 lowers the spindle engagement arm 217 so as to couple the input shaft 201 of the transaxle to the electric motor 220 of the text fixture.
- a coupling 221 allows for the upwards and downwards movement of the spindle 225. Once the spindle 225 is engaged with the input shaft of the transaxle, the transaxle is shifted into a forward speed.
- the electrical motor 220 is rotated and the sensor 10, located approximately 1/4-3/4 inches (3/8" shown) from the input shaft bearing, takes its reading in successive or interrupted one second duration data blocks (three preferred) .
- the sensor 10 located approximately 1/4-3/4 inches (3/8" shown) from the input shaft bearing, takes its reading in successive or interrupted one second duration data blocks (three preferred) .
- There is a main override loop in this analysis such that if there is an excessive spike in any sample, that particular sample is ignored and a new one occasioned to replace it.
- the samples are taken in the forward direction, they are averaged with the average compared to a standard as previously discussed. If the forward speed analysis is acceptable, the electric motor stops and the shifting mechanism moves the transaxle 200 shift into its reverse position. At that time, the process is repeated with new samples again averaged and compared to a standard.
- the standard does not have to be the same standard as used for forward as reverse is utilized different than forward. (In this preferred embodiment, they are the same. In other applications, the standards may vary) .
- average could include the mean, median, numerical average standard deviation or other parameter indicative of the device's performance relative to the standard.
- the transaxle locking cylinder 211 retracts thus releasing the transaxle from the retention fixture for automatic or manual removal.
- the transaxle passes both the forward and reverse tests, the transaxle is passed on for incorporation in a lawn and garden tractor.
- the transaxle fails either the forward or reverse analysis, it is removed from the manufacturing line for analysis and possible correction of any difficulties which may exist.
- life testings of units which passed and failed the disclosed procedure, it has been ascertained that the test procedure is very accurate in predicting if and when long term difficulties might arise with any given transaxle.
- experimental life testing has validated the disclosed invention.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
A device for testing mechanical devices using acoustic signature analysis of the sonic signature of such devices correlated to pre-determined known characteristics or parameters developed from valid devices to predict the long term operability of other unknown devices in a noisy environment like a factory or an airport wherein other sources of sound and/or vibration are present.
Description
ACOUSTIC SIGNATURE ANALYSIS FOR A NOISY ENVIRONMENT
Field of the Invention This invention relates to acoustic signature analysis of devices and things such as transmissions, body structure, frames, industrial machinery, and any other item with a sonic or frequency signature.
Background of the Invention Frequency analysis has been utilized for many years to ascertain whether or not a particular individual part of a device is within acceptable limits. Examples range from the dispersion analysis of individual jet engine blades to the arc typical truck driver using a baseball bat in order to determine whether or not the pressure within the numerous truck tires are all acceptable. These methods, whether they be sophisticated or archaic, are effective primarily as long as the desired frequency has a sufficient decibel level that it overwhelms surrounding sounds and/or the test is conducted in a isolated chamber which removes extraneous vibrations and sounds. This latter isolation chamber is particularly predominant in noisy factory environments wherein tow truck motors, electric motors, presses, forging machines, conveyors, passersby, and other sources of sound and vibration are present. Typically also the test apparatus is of a specialized design which somehow must be totally reconfigured or even replaced in order to test varying devices or items.
Objects and Summary of the Invention It is the object of this present invention to provide for an acoustic signature analysis of assembled devices or mechanisms. It is another object of the present invention to reduce the cost of acoustic signature analysis.
It is yet another object of the present invention to allow acoustic signature analysis to occur in a noisy environment such as a factory or an airport.
It is still another object of the present invention to provide for an automatic intuitive testing of mechanical devices. It is yet a further object of the present invention to utilize the known characteristics of valid devices in order to ascertain the present and future operability status of mechanical devices. It is a further object of the present invention to allow a concern to identify problem areas in the tested devices prior to any problems therewith.
It is another object of the present invention to allow a concern to institute a long range quality control program based on the initial testing of mechanical devices.
Other objects and a more complete understanding of the invention may be had by referring to the following descriptions and drawings in which:
Brief Description of the Drawings
The structure, operation, and advantages of the presently disclosed preferred embodiment of the invention will become apparent when consideration of the following description taken in conjunction with the accompanying drawings wherein:
Figure 1 is a block diagram of the test procedure of this invention,
Figure 2 is an expanded block diagram of the preferred test procedure of the present invention, Figure 3 is a drawing of a typical signature analysis curve for the particular preferred embodiment described in this application,
Figure 4 is a side view of a test stand for the preferred particular embodiment utilized in describing the invention herein.
Detailed Description of the Invention This invention relates to an acoustic signature analysis device and method, particularly suitable for use in a noisy environment such as a factory. The mechanism will be described in the atmosphere of a test procedure for a MTD transmission having forward and reverse gearing between an input shaft and two output half shafts. This transmission is described in the U.S. Patent 4,903,546, the contents of which are incorporated herein.
The particular preferred embodiment in its basic form is carried out by a test stand including a sensor 10, a preliminary filter 20, a rectifier 30, a secondary filter 40, and a compare to reference means 50.
The sensor 10 is designed to sense and transform any noise and/or vibration from the device or mechanism (here in "device") under test into an electric signal for further operations thereon. It is preferred that the sensor 10 have qualities including frequency bandwidth and range of sensitivity sufficient to produce an output able to be utilized in the rest of the operative procedures. These qualities further could be optimized for a given application even though an uneven signal is resultant.
In the particular preferred embodiment disclosed, the sensor 10 is a calibrated microphone having a 20 hertz to 20 kilohertz frequency range. It should be noted that this particular microphone has a frequency range in excess of that actually utilized by the remaining steps of the test procedure (as later set forth its range could be 500 to 5,000 hertz). The reason for this excess range is to allow the particular preferred test equipment and procedure to be amendable for utilization to test devices other than the particular transmission disclosed in the preferred embodiment. The extra capacity thus is available in the particular embodiment disclosed for testing numerous devices, assemblies and/or mechanical components (again "devices") with minor adaptations by a single testing facility.
In addition to the above sonic requirements, the output from the sensor 10 is first preferably examined for out of range random results in order to discard deviant samples. This override loop is able to ignore random input signals that are the result of extraneous factors such as the general factory environment (tow motors, presses, forging machines et al) . Further, there are multiple samples taken for a single device with averaging or combining of samples occurring in order to reduce random noise further. The sensor 10 thus responds to repeating signature with random signals being effectively ignored.
The preliminary filter 20 is utilized to restrict the output of the sensor to frequency ranges related to inherent structural characteristics of the particular device under test. This provides the maximum signal to noise ratio while at the same time minimizing background noise. The preliminary filter further is utilized to reject frequencies or vibrations which are not
necessary for the overall test procedure. For example, in the transmission of the particular preferred embodiment disclosed, it is recognized a frequency range from 500 to 5,000 hertz would be adequate to test the desired parameters of the particular transmission disclosed with a maximum signal to noise ratio while at the same time maximizing background noise immunity.
Further, this is accomplished without locating the sensor and/or transmission under test in an isolated environment. With alternate mechanisms being tested, other frequency bands that might, and would most likely be, appropriate for this filter.This allows for simplified analysis of the signal. In other devices other paramerters may be utilized. For example, in preliminary testing of a washing machine transmission, it was discovered that a cutoff frequency of 1.5 kilohertz would provide the necessary sonic information. In this respect, please note that although a simple filter is described having a single upper and a single lower cutoff frequency, with more sophisticated filters, it would be possible to select multiple cutoff frequencies so as to allow spikes of sonic information at certain very limited frequency ranges related to inherent structural characteristics of complex mechanical systems.
In addition to the above, the preliminary filter is also utilized in order to reduce the requirements and/or cost of the remaining components. For example, a filter of 10 kilohertz would cut off everything above this frequency, thus serving as an anti-aliasing filter for a digital circuit which would only need a 20 kilohertz sampling rate due to this preliminary filter (rather than 40 kilohertz plus otherwise needed for a 20 kilohertz input signal) .
The filter preferably also eliminates the frequencies
which were unnecessary for the analysis of the particular device being analyzed typically high frequencies but could be others.
Note that the filter can be occasioned by a limited bandwidth amplifier (occasioning similar results by not raising the signal level of undesired frequencies) or by alternate means isolating the desired signal components.
Note that the signals necessary for analysis might not be within the frequency bandwidth of ultimate examination. For example, in the preferred embodiment disclosed, the preliminary filter 20 removes frequencies below 500 hertz. However, the harmonics of repeating signals below this cutoff remain on the operative signal. The secondary filter 40 therefor examines the modulation of the available 500 hertz to 5,000 hertz signal to ascertain harmonics and sideband levels in the desired range (0-200 hertz utilized) . This use of analysis of what is in effect a higher frequency carrier to determine repeating signals within the desired range thus emphasizes the distinction between the signals necessary for analysis and the signals (which may have to be recreated) that are examined in respect to the desired test parameters. With more sophisticated analysis procedures (like that available in the later described digital embodiment) conversion before examination could be eliminated due to the availability of direct review. These signals are either determined theoretically or empirically such as by sampling or which is related to the rotational or vibration components of the device such as a transmission. Ideally, they are the minimum number to test the device, perhaps even reduced in an optimization procedure to the fewest critical signals.
In the specific in the preferred embodiment disclosed, this secondary filter is a 0 to 200 hertz filter, a frequency range which is related to the rotational components of a the transmission under test: for example certain test frequencies - a spur gear frequency range of from 20 to 40 hertz and a bevel gear limit from 160 to 180 hertz (together with a low range and base line limit later described) . These frequency ranges were determined by calculating the meshing frequencies of an operating transmission including amplitude limits which were determined by analyzing 100 sample transmissions with a cross check of taking 10 known transmissions to physical failure in subsequent durability testing. This manual procedure, while taking longer to set up the various parameters, was preferred due to the novelty of the present invention. With differing devices, other frequencies might be utilized. In this respect, note that the filter need not pass continuous blocks of frequencies but could instead be optimized to discrete frequencies and limited bandwidths. A digital filter would preferably be utilized for this type of discrete filtering.
After the signal has been full wave rectified, it is passed to a secondary filter 40. The resultant signal provides important information related to rotational components of the device under test. The secondary filter 40 also minimizes the data collection requirements. Fast Fourier Transformation (FFT) to determine the frequency content of the signal. This analysis is specifically designed to look at frequencies which are related to rotating components in the transmission. The particular analysis components can and should be adjusted to provide flexibility.
The signal from the preliminry filter 20 is passed through a full wave rectifier 30. After the signal has been so rectified, it is passed to a secondary filter 40. The resultant signal provides important information related to the rotational components of the device under test. The secondary filter 40 also minimizes the data collection system requirements.
The signal from the secondary filter 40 is then passed through a Fast Fourier Transformation (FFT) to determine the frequency content of the signal. This analysis is specifically designed to look at frequencies which are related to rotating components in the device under test. The particular analysis parameters can be adjusted to provide flexibility.
After the signal has passed through the secondary filter 40, it is compared to references by means 50. These references are determined in order to provide for the testing of unknown devices while producing results indicative necessary parameters of the construction of such devices. Preferably, these references are sufficiently defined to represent the desired qualities of the device under test. If the device under test is within the limits of the references, it passes the analysis. In the particular preferred embodiment disclosed there are four references: these are a) the low frequency limit, b) the spur gear limit, c) the input bevel limit, and d) the base line limit (figure 3) .
The low frequency limit is used to check the condition of the differential gears and the output shaft of the transmission. The spur gear limit is used to check the condition of the intermediate shaft spur gear. The input bevel limit iε used to check the condition of the input bevel gear mesh. The base line
limit is used to look at all frequency bands other than the ones described above to provide for an overall noise and vibration limit check. Other numbers and types of limits would be appropriate in testing other devices.
In the preferred embodiment disclosed, the extent of the limits can be modified on line in order to adjust the respective limits in real time. This is preferred in that it allows the manufacturer to change the testing parameters for the device if he so desires or if the facts so warrant. Note that although Figure 3 shows changeable levels, the bandwidth and center frequency of the test parameters could also be changed. In addition, figure 3 shows three frequency centered limits:, any number could in fact be provided - especially in the software driven digital example of figure 2.
The invention can be constructed in either analog or digital form. Figure 2 discloses an embodiment wherein all of the processing and analysis of the output of the sensor occurs within in a digital form, in the preferred embodiment disclosed, all within a computer 200 (although the parts could be otherwise housed) . This use of a digital computer allows for the invention to be modified for different apparatus through either input of different variables into software (preferred) and/or by reprogramming or replacing the computer software. In respect to the former, the various parameters could be adjusted from a set of input data which define the parameters for the various procedures of the invention. Examples of this would be the frequencies, levels, and bandwidth of the digital filtering, the extent of the rectification, the limits of the secondary filtering, the parameters of the FFT
analysis including the frequencies examined together with their bandwidth and limits. This would allow a single test device to be utilized with the testing of multiple devices and/or mechanical items. This would expand the versatility of a single test device.
In respect to the latter, the software could be rebooted in a program with different parameters (possibly even a different program) to produce optimal results. This again would define the various parameters to optimize the test procedure.
The sensor 110 in the digital version is chosen in order to measure the desired sonic qualities of the device being tested. This has been previously described in respect to sensor 10 of the generic figure 1.
From the sensor through the analysis, all of the remaining components of this Figure 2 are preferably located within the computer 200 (they could be located otherwise including individually also) . These include an anti-aliasing filter 160, an analog to digital converter 170, a digital filtering 120, conversion to alternating current 180, rectification 130, a secondary filter 140, and fast fourier transformation analysis 150. The anti-aliasing filter 160 is used in the digital format in order to eliminate errors which might occur due to the sampling frequency in respect to input signal frequency (it is not needed in an analog test device) . It is preferred that this filter cut off the signal at less than 1/2 the chosen digital sampling rate in order to avoid this error. In this respect, it is noted that (without very sophisticated state of the art equipment) normally the input frequency(s) necessary to test the device is first determined, then the sampling rate is determined to be over twice this frequency, and only then is the cut
off of the anti-aliasing filter determined. The reason for this is that certain signal information must reach the remaining steps - and too low a filter cut off may eliminate some of this information prior to processing. (Note that with a universal test machine, the parameters would preferably be selected or optimized based on the most demanding application for the machine, leaving lesser devices with excess test capability) . In the particular preferred embodiment disclosed, the data is analyzed at a 20 kilohertz sampling frequency and a 12 bit data. The anti-aliasing filter 160 has a corresponding 10 kilohertz cut off frequency. In the particular embodiment disclosed, the filter 160 is mounted on the interface board between the sensor and the digital data bus and is a module made by Analog Devices. (Note that as previously set forth in fact only 5 kilohertz of signal information is needed. For this reason, a 10 kilohertz sampling frequency and 5 kilohertz anti-aliasing filter could have been utilized to test this particular transmission.However, for adaptability higher frequencies are being utilized) . Note also that if the device was processing high frequency information from the sensor 110, for example, 50 kilohertz information, the sampling rate of the computer and the anti-aliasing filter would also have to be adjusted accordingly. From the anti-aliasing filter 160, the signal passes to an analog to digital converter which converts the analog information into digital data for subsequent processing. The frequency of digital sampling and the amount of bits of data is chosen in view of the overall frequency which need be analyzed. The type of digital sampling is not critical. Pulse
width modulation, pulse density modulation, and other digital sampling systems could be utilized, as could various bit schemes such as oversampling.
In the particular example disclosed, the conversion occurs at a straight 20 kilohertz with 12 bit data accuracy. (Again higher than actually needed for the transmission disclosed under test but much less than that that could be provided with alternate digital techniques) . The digital information from the analog to digital converter is filtered by the digital filter 120. As with the preliminary filter 20, this is primarily band pass filtering to filter out mechanical noise and random noise (mostly frequencies below 500 hertz) . The low frequency filtering gets rid of non-repeating or random structural influences such as the test stand, forging equipment, etc. As previously discussed, due to the inherent accuracy of digital filtering, it would be possible to program the digital filter with many very limited bandwidths centered around very specific frequencies in order to more precisely test the desired signals. Further, in respect to this signal, it would be possible to provide frequency shifting in order to reduce the speed (and cost) of subsequent components (i.e. shift a 1,000 hertz bandwidth about a 1 megahertz center frequency to a 1,000 hertz bandwidth about a 20 kilohertz center frequency) .
The digitally filtered signal is passed to an alternating current conversion mechanism which serves to remove any DC component on the digital data. The nature and extent of this conversion is not critical as long as the subsequent steps are adjusted accordingly (for example zero base line AC or mid point base line AC) .
The alternating current is then rectified. The purposes and advantages of this has been previously been discussed in respect to the rectifier 30 of figure 1. The rectified signal is then passed to a secondary filter 140. This secondary filter performs the same function as the secondary filter 40 of figure 1.
The signal from the secondary filter is then passed through fast fourier transformation analysis
(FFT) 150. This analysis is specifically designed to look at frequencies which are particularly pertinent to the particular device being tested - in this case load monitoring of a transmission which is not connected except a motor at the input shaft (actual test procedures later described) . The particular analysis parameters can again be adjusted so as to provide for suitable testing parameters of the device under test. A typical test envelope is shown in figure
3. As previously set forth, this device includes a low frequency limit, a spur gear limit, an input bevel limit, and a base line limit, all of which can be changed in real time. Further, the particular signal that is then undergoing analysis can be viewed in real time on the spectrum viewer along with the particular limits which have been set for the test machine. Further to the above, in this digital embodiment, all of the test results can be saved in a storage module 190 for future use. This allows the user to acquire, store, and maintain performance data of the devices under test for future reference and/or analysis. It further allows a manufacturer to record an item number for each device in the storage module such that by reference to this item number identification of the device, the particular pertinent test results can be
retrieved from storage. In the particular embodiment disclosed, the storage 190 is an optical storage disk. Other forms of storage are also possible.
The invention of the present application is suitable for testing any mechanical or other device which has sonic properties. These include diverse items such as the transmission of a lawn mower (as disclosed in the preferred embodiment) , a helicopter main bearing, an entire automobile, steel I beams, roadways, and any other item which has a sonic or frequency signature.
Discussion of the transaxle testing procedure demonstrates the flexibility of the present invention. In the disclosed preferred embodiment, a transaxle 200 is manually or automatically located in position in respect to a test fixture. At this time, a transaxle locking cylinder 211 extends its piston 212 to lock the transaxle 200 in a retention fixture 215. At this time, the spindle actuator 216 lowers the spindle engagement arm 217 so as to couple the input shaft 201 of the transaxle to the electric motor 220 of the text fixture. A coupling 221 allows for the upwards and downwards movement of the spindle 225. Once the spindle 225 is engaged with the input shaft of the transaxle, the transaxle is shifted into a forward speed. In the preferred embodiment, this would be occasioned by a separate cylinder physically moving the shift rod into its forward position. At this time, the electrical motor 220 is rotated and the sensor 10, located approximately 1/4-3/4 inches (3/8" shown) from the input shaft bearing, takes its reading in successive or interrupted one second duration data blocks (three preferred) . There is a main override loop in this analysis such that if there is an excessive spike in
any sample, that particular sample is ignored and a new one occasioned to replace it.
Once the samples are taken in the forward direction, they are averaged with the average compared to a standard as previously discussed. If the forward speed analysis is acceptable, the electric motor stops and the shifting mechanism moves the transaxle 200 shift into its reverse position. At that time, the process is repeated with new samples again averaged and compared to a standard. Note that the standard does not have to be the same standard as used for forward as reverse is utilized different than forward. (In this preferred embodiment, they are the same. In other applications, the standards may vary) . Note also, average could include the mean, median, numerical average standard deviation or other parameter indicative of the device's performance relative to the standard.
At the end of this testing, the transaxle locking cylinder 211 retracts thus releasing the transaxle from the retention fixture for automatic or manual removal.
If the transaxle passed both the forward and reverse tests, the transaxle is passed on for incorporation in a lawn and garden tractor.
If the transaxle fails either the forward or reverse analysis, it is removed from the manufacturing line for analysis and possible correction of any difficulties which may exist. Through life testings of units which passed and failed, the disclosed procedure, it has been ascertained that the test procedure is very accurate in predicting if and when long term difficulties might arise with any given transaxle. Thus, experimental life testing has validated the disclosed invention.
Although the invention has been described in the preferred embodiment with a certain degree of particularity, it is to be understood that numerous changes can be made without deviating from the invention as hereinafter claimed.
Claims
What is Claimed: Claim 1. A method for testing mechanical devices including the steps of locating the mechanical device at a test location, operating the device, sensing the sounds and/or vibrations coming from the device with a sensor, filtering the signal from the sensor to highlight important frequencies, rectifying the signal from the filter, and comparing the signal from the rectifier to a reference in order to ascertain the status of the device.
Claim 2. The method of claim 1 characterized in that the sensing the sounds and/or vibrations coming from the device utilizes multiple samples.
Claim 3. The method of claim 1 characterized by the addition of a bypass filter, and said bypass filter deleting undesired signals.
Claim 4. The method of claim 3 characterized by the addition of a harmonic modulation sensing means to sense repeatable signals below the cutoff frequency of said bypass filter.
Claim 5. The method of claim 4 characterized by the addition of secondary filter means to accentuate said repeatable signals below the cutoff frequency of said pass filter.
Claim 6. A method for testing mechanical devices including the steps of locating the mechanical device at a test location, sensing the sounds and/or vibrations coming from the device with a sensor, discarding random non-repeating sounds and/or vibrations, and comparing the non-disgarded output of the sensor to a reference in order to ascertain the status of the device.
Claim 7. The method of claim 6 characterized by the addition of a bypass filter, and said bypass filter deleting undesired signals.
Claim 8. The method of claim 7 characterized by the addition of a harmonic modulation sensing means to sense repeatable signals below the cutoff frequency of said bypass filter.
Claim 9. The method of claim 8 characterized by the addition of secondary filter means to accentuate said repeatable signals below the cutoff frequency of said bypass filter.
Claim 10. The method of claim 6 characterized by the addition of sensing multiple samples of sounds and/or vibrations and averaging such before comparing non-disgarded output to a reference.
Claim 11. The method of claim 6 characterized in that said sounds and/or vibrations are sensed indirectly by their modulating harmonics.
Claim 12. The method of claim 6 characterized in that said reference includes multiple parameters.
Claim 13. The method of claim 6 characterized by the addition of rectifying the signal from the sensor.
Claim 14. A method for testing mechanical device including the steps of locating the mechanical locating the device at a test location, operating the device, sensing the sounds and/or vibrations coming from the device with a sensor, disgarding random non-repeating sounds and/or vibrations, filtering the signal from the sensor to highlight important frequencies, rectifying the signal from the filter, and comparing the signal from the rectifier to a reference in order to ascertain the status of the device.
Claim 15. The method of claim 14 characterized in that the sensing the sounds and/or vibrations coming from the device utilizes multiple samples.
Claim 16. The method of claim 14 characterized by the addition of a bypass filter, and said bypass filter deleting undesired signals.
Claim 17. The method of claim 14 characterized by the addition of a harmonic modulation sensing means to sense repeatable signals below the cutoff frequency of said bypass filter.
Claim 18. The method of claim 14 characterized by the addition of secondary filter means to accentuate said repeatable signals below the cutoff frequency of said bypass filter.
Claim 19. An apparatus for testing mechanical devices including means for locating the mechanical device at a test location, means for operating the device, means for sensing the sounds and/or vibrations coming from the device with a sensor, means for filtering the signal from the sensor to highlight important frequencies, means for rectifying the signal from the filter, and means for comparing the signal from the rectifier to a reference in order to ascertain the status of the device.
Claim 20. The apparatus of claim 19 characterized in that the means for sensing the sounds and/or vibrations coming from the device utilizes multiple samples.
Claim 21. The apparatus of claim 19 characterized by the addition of a bypass filter, and said bypass filter deleting undesired signals.
Claim 22. The apparatus of claim 21 characterized by the addition of a harmonic modulation sensing means to sense repeatable signals below the cutoff frequency of said bypass filter.
Claim 23. The apparatus of claim 22 characterized by the addition of secondary filter means to accentuate said repeatable signals below the cutoff frequency of said pass filter.
Claim 24. An apparatus for testing mechanical devices including means for locating the mechanical device at a test location, means for sensing the sounds and/or vibrations coming from the device with a sensor, means for discarding random non-repeating sounds and/or vibrations, and means for comparing the non-disgarded output of the sensor to a reference in order to ascertain the status of the device.
Claim 25. The apparatus of claim 24 characterized by the addition of a bypass filter, and said bypass filter deleting undesired signals.
Claim 26. The method of claim 24 characterized by the addition of a harmonic modulation sensing means to sense repeatable signals below the cutoff frequency of said bypass filter.
Claim 27. The apparatus of claim 26 characterized by the addition of secondary filter means to accentuate said repeatable signals below the cutoff frequency of said bypass filter.
Claim 28. The apparaus of claim 24 characterized by the addition of sensing multiple samples of sounds and/or vibrations and averaging such before comparing non-disgarded output to a reference.
Claim 29. The apparatus of claim 24 characterized in that said sounds and/or vibrations are sensed indirectly by their modulating harmonics.
Claim 30. The apparatus of claim 24 characterized in that said reference includes multiple parameters.
Claim 31. The apparatus of claim 24 characterized by the addition of means for rectifying the signal from the sensor.
Claim 32. An apparatus for testing mechanical device including the means for locating the mechanical device at a test location, means for operating the device, means for sensing the sounds and/or vibrations coming from the device with a sensor, means for disgarding random non-repeating sounds and/or vibrations, means for filtering the signal from the sensor to highlight important frequencies, means for rectifying the signal from the filter, and means for comparing the signal from the rectifier to a reference in order to ascertain the status of the device.
Claim 33. The method of claim 32 characterized in that the means for sensing the sounds and/or vibrations coming from the device utilizes multiple samples.
Claim 34. The apparatus of claim 32 characterized by the addition of a bypass filter, and said bypass filter deleting undesired signals.
Claim 35. The apparatus of claim 32 characterized by the addition of a harmonic modulation sensing means to sense repeatable signals below the cutoff frequency of said bypass filter.
Claim 36. The apparatus of claim 32 characterized by the addition of secondary filter means to accentuate said repeatable signals below the cutoff frequency of said bypass filter.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU72615/96A AU7261596A (en) | 1995-10-16 | 1996-10-15 | Acoustic signature analysis for a noisy environment |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/543,711 | 1995-10-16 | ||
US08/543,711 US5804726A (en) | 1995-10-16 | 1995-10-16 | Acoustic signature analysis for a noisy enviroment |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997014940A1 true WO1997014940A1 (en) | 1997-04-24 |
Family
ID=24169265
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1996/016235 WO1997015044A1 (en) | 1995-10-16 | 1996-10-11 | Acoustic signature analysis for a noisy environment |
PCT/US1996/016131 WO1997014940A1 (en) | 1995-10-16 | 1996-10-15 | Acoustic signature analysis for a noisy environment |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1996/016235 WO1997015044A1 (en) | 1995-10-16 | 1996-10-11 | Acoustic signature analysis for a noisy environment |
Country Status (4)
Country | Link |
---|---|
US (1) | US5804726A (en) |
AU (2) | AU1682497A (en) |
CA (1) | CA2187994A1 (en) |
WO (2) | WO1997015044A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106969826A (en) * | 2017-04-10 | 2017-07-21 | 西安航天动力试验技术研究所 | The calibrating installation and calibration method of a kind of vibrating sensor |
Families Citing this family (430)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6362629B1 (en) | 1997-08-14 | 2002-03-26 | Hendry Mechanical Works | Electric arc monitoring systems |
US6772077B1 (en) | 1998-08-10 | 2004-08-03 | Hendry Mechanical Works | Electric arc monitoring systems |
DE19857552A1 (en) | 1998-12-14 | 2000-06-15 | Rolls Royce Deutschland | Method for detecting a shaft break in a fluid flow machine |
DE19927693A1 (en) * | 1999-06-17 | 2000-12-21 | Ima Materialforschung Und Anwe | Method for determining structural resonances includes diagnostics based on accelerating signals from an equipment surface while looking for resonant frequencies stimulated by shock impacts. |
DE19927961B4 (en) * | 1999-06-18 | 2005-09-29 | Sauer-Sundstrand Gmbh & Co. | Method for determining the operating parameters operating speed, working pressure and swivel angle |
US6400258B1 (en) * | 2000-01-19 | 2002-06-04 | Hendry Mechanical Works | Electric arc monitoring systems |
US6532430B1 (en) * | 2000-06-12 | 2003-03-11 | The United States Of America As Represented By The Secretary Of The Navy | Method for determining a turbine pump RPM profile |
US6684700B1 (en) * | 2000-08-11 | 2004-02-03 | Swantech, L.L.C. | Stress wave sensor |
US6591682B1 (en) * | 2000-08-14 | 2003-07-15 | Pruftechnik Dieter Busch Ag | Device and process for signal analysis |
US6636817B2 (en) | 2000-09-20 | 2003-10-21 | Seagate Technology Llc | Method and apparatus for enhanced mechanical signature analysis |
US6742208B2 (en) * | 2001-08-24 | 2004-06-01 | Maytag Corporation | Clothes washing machine incorporating noise reduction system |
US6687654B2 (en) | 2001-09-10 | 2004-02-03 | The Johns Hopkins University | Techniques for distributed machinery monitoring |
US6711952B2 (en) | 2001-10-05 | 2004-03-30 | General Electric Company | Method and system for monitoring bearings |
FR2836226B1 (en) * | 2002-02-18 | 2004-05-14 | Airbus France | METHOD FOR IDENTIFYING A SOURCE OF A SIGNAL |
US7027953B2 (en) * | 2002-12-30 | 2006-04-11 | Rsl Electronics Ltd. | Method and system for diagnostics and prognostics of a mechanical system |
US20070084897A1 (en) | 2003-05-20 | 2007-04-19 | Shelton Frederick E Iv | Articulating surgical stapling instrument incorporating a two-piece e-beam firing mechanism |
US9060770B2 (en) | 2003-05-20 | 2015-06-23 | Ethicon Endo-Surgery, Inc. | Robotically-driven surgical instrument with E-beam driver |
JP4473660B2 (en) * | 2004-07-07 | 2010-06-02 | 株式会社アドバンテスト | Thinning filter and test device |
US11998198B2 (en) | 2004-07-28 | 2024-06-04 | Cilag Gmbh International | Surgical stapling instrument incorporating a two-piece E-beam firing mechanism |
US8215531B2 (en) | 2004-07-28 | 2012-07-10 | Ethicon Endo-Surgery, Inc. | Surgical stapling instrument having a medical substance dispenser |
US11896225B2 (en) | 2004-07-28 | 2024-02-13 | Cilag Gmbh International | Staple cartridge comprising a pan |
US9072535B2 (en) | 2011-05-27 | 2015-07-07 | Ethicon Endo-Surgery, Inc. | Surgical stapling instruments with rotatable staple deployment arrangements |
US7669746B2 (en) | 2005-08-31 | 2010-03-02 | Ethicon Endo-Surgery, Inc. | Staple cartridges for forming staples having differing formed staple heights |
US9237891B2 (en) | 2005-08-31 | 2016-01-19 | Ethicon Endo-Surgery, Inc. | Robotically-controlled surgical stapling devices that produce formed staples having different lengths |
US11246590B2 (en) | 2005-08-31 | 2022-02-15 | Cilag Gmbh International | Staple cartridge including staple drivers having different unfired heights |
US11484312B2 (en) | 2005-08-31 | 2022-11-01 | Cilag Gmbh International | Staple cartridge comprising a staple driver arrangement |
US7934630B2 (en) | 2005-08-31 | 2011-05-03 | Ethicon Endo-Surgery, Inc. | Staple cartridges for forming staples having differing formed staple heights |
US8365976B2 (en) | 2006-09-29 | 2013-02-05 | Ethicon Endo-Surgery, Inc. | Surgical staples having dissolvable, bioabsorbable or biofragmentable portions and stapling instruments for deploying the same |
US8991676B2 (en) | 2007-03-15 | 2015-03-31 | Ethicon Endo-Surgery, Inc. | Surgical staple having a slidable crown |
US10159482B2 (en) | 2005-08-31 | 2018-12-25 | Ethicon Llc | Fastener cartridge assembly comprising a fixed anvil and different staple heights |
US20070106317A1 (en) | 2005-11-09 | 2007-05-10 | Shelton Frederick E Iv | Hydraulically and electrically actuated articulation joints for surgical instruments |
US11224427B2 (en) | 2006-01-31 | 2022-01-18 | Cilag Gmbh International | Surgical stapling system including a console and retraction assembly |
US20110290856A1 (en) | 2006-01-31 | 2011-12-01 | Ethicon Endo-Surgery, Inc. | Robotically-controlled surgical instrument with force-feedback capabilities |
US20110024477A1 (en) | 2009-02-06 | 2011-02-03 | Hall Steven G | Driven Surgical Stapler Improvements |
US8186555B2 (en) | 2006-01-31 | 2012-05-29 | Ethicon Endo-Surgery, Inc. | Motor-driven surgical cutting and fastening instrument with mechanical closure system |
US7845537B2 (en) | 2006-01-31 | 2010-12-07 | Ethicon Endo-Surgery, Inc. | Surgical instrument having recording capabilities |
US7753904B2 (en) | 2006-01-31 | 2010-07-13 | Ethicon Endo-Surgery, Inc. | Endoscopic surgical instrument with a handle that can articulate with respect to the shaft |
US11278279B2 (en) | 2006-01-31 | 2022-03-22 | Cilag Gmbh International | Surgical instrument assembly |
US20120292367A1 (en) | 2006-01-31 | 2012-11-22 | Ethicon Endo-Surgery, Inc. | Robotically-controlled end effector |
US8708213B2 (en) | 2006-01-31 | 2014-04-29 | Ethicon Endo-Surgery, Inc. | Surgical instrument having a feedback system |
US11793518B2 (en) | 2006-01-31 | 2023-10-24 | Cilag Gmbh International | Powered surgical instruments with firing system lockout arrangements |
US8820603B2 (en) | 2006-01-31 | 2014-09-02 | Ethicon Endo-Surgery, Inc. | Accessing data stored in a memory of a surgical instrument |
US8992422B2 (en) | 2006-03-23 | 2015-03-31 | Ethicon Endo-Surgery, Inc. | Robotically-controlled endoscopic accessory channel |
US8322455B2 (en) | 2006-06-27 | 2012-12-04 | Ethicon Endo-Surgery, Inc. | Manually driven surgical cutting and fastening instrument |
US10568652B2 (en) | 2006-09-29 | 2020-02-25 | Ethicon Llc | Surgical staples having attached drivers of different heights and stapling instruments for deploying the same |
US11980366B2 (en) | 2006-10-03 | 2024-05-14 | Cilag Gmbh International | Surgical instrument |
US8632535B2 (en) | 2007-01-10 | 2014-01-21 | Ethicon Endo-Surgery, Inc. | Interlock and surgical instrument including same |
US11291441B2 (en) | 2007-01-10 | 2022-04-05 | Cilag Gmbh International | Surgical instrument with wireless communication between control unit and remote sensor |
US8652120B2 (en) | 2007-01-10 | 2014-02-18 | Ethicon Endo-Surgery, Inc. | Surgical instrument with wireless communication between control unit and sensor transponders |
US8684253B2 (en) | 2007-01-10 | 2014-04-01 | Ethicon Endo-Surgery, Inc. | Surgical instrument with wireless communication between a control unit of a robotic system and remote sensor |
US11039836B2 (en) | 2007-01-11 | 2021-06-22 | Cilag Gmbh International | Staple cartridge for use with a surgical stapling instrument |
US8540128B2 (en) | 2007-01-11 | 2013-09-24 | Ethicon Endo-Surgery, Inc. | Surgical stapling device with a curved end effector |
US8893946B2 (en) | 2007-03-28 | 2014-11-25 | Ethicon Endo-Surgery, Inc. | Laparoscopic tissue thickness and clamp load measuring devices |
US8931682B2 (en) | 2007-06-04 | 2015-01-13 | Ethicon Endo-Surgery, Inc. | Robotically-controlled shaft based rotary drive systems for surgical instruments |
US11857181B2 (en) | 2007-06-04 | 2024-01-02 | Cilag Gmbh International | Robotically-controlled shaft based rotary drive systems for surgical instruments |
US7753245B2 (en) | 2007-06-22 | 2010-07-13 | Ethicon Endo-Surgery, Inc. | Surgical stapling instruments |
US11849941B2 (en) | 2007-06-29 | 2023-12-26 | Cilag Gmbh International | Staple cartridge having staple cavities extending at a transverse angle relative to a longitudinal cartridge axis |
US11986183B2 (en) | 2008-02-14 | 2024-05-21 | Cilag Gmbh International | Surgical cutting and fastening instrument comprising a plurality of sensors to measure an electrical parameter |
US9179912B2 (en) | 2008-02-14 | 2015-11-10 | Ethicon Endo-Surgery, Inc. | Robotically-controlled motorized surgical cutting and fastening instrument |
RU2493788C2 (en) | 2008-02-14 | 2013-09-27 | Этикон Эндо-Серджери, Инк. | Surgical cutting and fixing instrument, which has radio-frequency electrodes |
US8573465B2 (en) | 2008-02-14 | 2013-11-05 | Ethicon Endo-Surgery, Inc. | Robotically-controlled surgical end effector system with rotary actuated closure systems |
US7819298B2 (en) | 2008-02-14 | 2010-10-26 | Ethicon Endo-Surgery, Inc. | Surgical stapling apparatus with control features operable with one hand |
US7866527B2 (en) | 2008-02-14 | 2011-01-11 | Ethicon Endo-Surgery, Inc. | Surgical stapling apparatus with interlockable firing system |
US8636736B2 (en) | 2008-02-14 | 2014-01-28 | Ethicon Endo-Surgery, Inc. | Motorized surgical cutting and fastening instrument |
US8758391B2 (en) | 2008-02-14 | 2014-06-24 | Ethicon Endo-Surgery, Inc. | Interchangeable tools for surgical instruments |
US20130153641A1 (en) | 2008-02-15 | 2013-06-20 | Ethicon Endo-Surgery, Inc. | Releasable layer of material and surgical end effector having the same |
US11272927B2 (en) | 2008-02-15 | 2022-03-15 | Cilag Gmbh International | Layer arrangements for surgical staple cartridges |
US9005230B2 (en) | 2008-09-23 | 2015-04-14 | Ethicon Endo-Surgery, Inc. | Motorized surgical instrument |
US11648005B2 (en) | 2008-09-23 | 2023-05-16 | Cilag Gmbh International | Robotically-controlled motorized surgical instrument with an end effector |
US8210411B2 (en) | 2008-09-23 | 2012-07-03 | Ethicon Endo-Surgery, Inc. | Motor-driven surgical cutting instrument |
US9386983B2 (en) | 2008-09-23 | 2016-07-12 | Ethicon Endo-Surgery, Llc | Robotically-controlled motorized surgical instrument |
US8608045B2 (en) | 2008-10-10 | 2013-12-17 | Ethicon Endo-Sugery, Inc. | Powered surgical cutting and stapling apparatus with manually retractable firing system |
US8326582B2 (en) * | 2008-12-18 | 2012-12-04 | International Electronic Machines Corporation | Acoustic-based rotating component analysis |
US8517239B2 (en) | 2009-02-05 | 2013-08-27 | Ethicon Endo-Surgery, Inc. | Surgical stapling instrument comprising a magnetic element driver |
RU2525225C2 (en) | 2009-02-06 | 2014-08-10 | Этикон Эндо-Серджери, Инк. | Improvement of drive surgical suturing instrument |
US8444036B2 (en) | 2009-02-06 | 2013-05-21 | Ethicon Endo-Surgery, Inc. | Motor driven surgical fastener device with mechanisms for adjusting a tissue gap within the end effector |
US8851354B2 (en) | 2009-12-24 | 2014-10-07 | Ethicon Endo-Surgery, Inc. | Surgical cutting instrument that analyzes tissue thickness |
US8220688B2 (en) | 2009-12-24 | 2012-07-17 | Ethicon Endo-Surgery, Inc. | Motor-driven surgical cutting instrument with electric actuator directional control assembly |
US8762520B2 (en) | 2010-07-02 | 2014-06-24 | At&T Intellectual Property I, L.P. | Method and system to detect a predictive network signature |
US8783543B2 (en) | 2010-07-30 | 2014-07-22 | Ethicon Endo-Surgery, Inc. | Tissue acquisition arrangements and methods for surgical stapling devices |
US8171797B2 (en) | 2010-09-23 | 2012-05-08 | General Electric Company | Sideband energy ratio method for gear mesh fault detection |
US9629814B2 (en) | 2010-09-30 | 2017-04-25 | Ethicon Endo-Surgery, Llc | Tissue thickness compensator configured to redistribute compressive forces |
US11925354B2 (en) | 2010-09-30 | 2024-03-12 | Cilag Gmbh International | Staple cartridge comprising staples positioned within a compressible portion thereof |
US9364233B2 (en) | 2010-09-30 | 2016-06-14 | Ethicon Endo-Surgery, Llc | Tissue thickness compensators for circular surgical staplers |
US11298125B2 (en) | 2010-09-30 | 2022-04-12 | Cilag Gmbh International | Tissue stapler having a thickness compensator |
US10945731B2 (en) | 2010-09-30 | 2021-03-16 | Ethicon Llc | Tissue thickness compensator comprising controlled release and expansion |
US9241714B2 (en) | 2011-04-29 | 2016-01-26 | Ethicon Endo-Surgery, Inc. | Tissue thickness compensator and method for making the same |
US9517063B2 (en) | 2012-03-28 | 2016-12-13 | Ethicon Endo-Surgery, Llc | Movable member for use with a tissue thickness compensator |
US11812965B2 (en) | 2010-09-30 | 2023-11-14 | Cilag Gmbh International | Layer of material for a surgical end effector |
US8777004B2 (en) | 2010-09-30 | 2014-07-15 | Ethicon Endo-Surgery, Inc. | Compressible staple cartridge comprising alignment members |
US9320523B2 (en) | 2012-03-28 | 2016-04-26 | Ethicon Endo-Surgery, Llc | Tissue thickness compensator comprising tissue ingrowth features |
US9282962B2 (en) | 2010-09-30 | 2016-03-15 | Ethicon Endo-Surgery, Llc | Adhesive film laminate |
US8695866B2 (en) | 2010-10-01 | 2014-04-15 | Ethicon Endo-Surgery, Inc. | Surgical instrument having a power control circuit |
JP6026509B2 (en) | 2011-04-29 | 2016-11-16 | エシコン・エンド−サージェリィ・インコーポレイテッドEthicon Endo−Surgery,Inc. | Staple cartridge including staples disposed within a compressible portion of the staple cartridge itself |
US11207064B2 (en) | 2011-05-27 | 2021-12-28 | Cilag Gmbh International | Automated end effector component reloading system for use with a robotic system |
US20150319547A1 (en) * | 2011-12-14 | 2015-11-05 | Knowles Electronics, Llc | Multiple barrier test fixture and method of testing using the same |
US9044230B2 (en) | 2012-02-13 | 2015-06-02 | Ethicon Endo-Surgery, Inc. | Surgical cutting and fastening instrument with apparatus for determining cartridge and firing motion status |
MX353040B (en) | 2012-03-28 | 2017-12-18 | Ethicon Endo Surgery Inc | Retainer assembly including a tissue thickness compensator. |
JP6105041B2 (en) | 2012-03-28 | 2017-03-29 | エシコン・エンド−サージェリィ・インコーポレイテッドEthicon Endo−Surgery,Inc. | Tissue thickness compensator containing capsules defining a low pressure environment |
CN104321024B (en) | 2012-03-28 | 2017-05-24 | 伊西康内外科公司 | Tissue thickness compensator comprising a plurality of layers |
US9101358B2 (en) | 2012-06-15 | 2015-08-11 | Ethicon Endo-Surgery, Inc. | Articulatable surgical instrument comprising a firing drive |
US9204879B2 (en) | 2012-06-28 | 2015-12-08 | Ethicon Endo-Surgery, Inc. | Flexible drive member |
BR112014032740A2 (en) | 2012-06-28 | 2020-02-27 | Ethicon Endo Surgery Inc | empty clip cartridge lock |
BR112014032776B1 (en) | 2012-06-28 | 2021-09-08 | Ethicon Endo-Surgery, Inc | SURGICAL INSTRUMENT SYSTEM AND SURGICAL KIT FOR USE WITH A SURGICAL INSTRUMENT SYSTEM |
US20140005678A1 (en) | 2012-06-28 | 2014-01-02 | Ethicon Endo-Surgery, Inc. | Rotary drive arrangements for surgical instruments |
US9289256B2 (en) | 2012-06-28 | 2016-03-22 | Ethicon Endo-Surgery, Llc | Surgical end effectors having angled tissue-contacting surfaces |
US9649111B2 (en) | 2012-06-28 | 2017-05-16 | Ethicon Endo-Surgery, Llc | Replaceable clip cartridge for a clip applier |
US11202631B2 (en) | 2012-06-28 | 2021-12-21 | Cilag Gmbh International | Stapling assembly comprising a firing lockout |
US20140001231A1 (en) | 2012-06-28 | 2014-01-02 | Ethicon Endo-Surgery, Inc. | Firing system lockout arrangements for surgical instruments |
JP6382235B2 (en) | 2013-03-01 | 2018-08-29 | エシコン・エンド−サージェリィ・インコーポレイテッドEthicon Endo−Surgery,Inc. | Articulatable surgical instrument with a conductive path for signal communication |
JP6345707B2 (en) | 2013-03-01 | 2018-06-20 | エシコン・エンド−サージェリィ・インコーポレイテッドEthicon Endo−Surgery,Inc. | Surgical instrument with soft stop |
FR3003028B1 (en) * | 2013-03-08 | 2015-08-07 | Peugeot Citroen Automobiles Sa | METHOD FOR MEASURING A NOISE OF A STRUCTURAL ELEMENT OF A VEHICLE |
US9629629B2 (en) | 2013-03-14 | 2017-04-25 | Ethicon Endo-Surgey, LLC | Control systems for surgical instruments |
US9687230B2 (en) | 2013-03-14 | 2017-06-27 | Ethicon Llc | Articulatable surgical instrument comprising a firing drive |
JP6033718B2 (en) * | 2013-03-22 | 2016-11-30 | 本田技研工業株式会社 | Sound inspection method |
BR112015026109B1 (en) | 2013-04-16 | 2022-02-22 | Ethicon Endo-Surgery, Inc | surgical instrument |
US9814460B2 (en) | 2013-04-16 | 2017-11-14 | Ethicon Llc | Modular motor driven surgical instruments with status indication arrangements |
MX369362B (en) | 2013-08-23 | 2019-11-06 | Ethicon Endo Surgery Llc | Firing member retraction devices for powered surgical instruments. |
US9987006B2 (en) | 2013-08-23 | 2018-06-05 | Ethicon Llc | Shroud retention arrangement for sterilizable surgical instruments |
US9962161B2 (en) | 2014-02-12 | 2018-05-08 | Ethicon Llc | Deliverable surgical instrument |
CN106232029B (en) | 2014-02-24 | 2019-04-12 | 伊西康内外科有限责任公司 | Fastening system including firing member locking piece |
JP6282148B2 (en) * | 2014-03-17 | 2018-02-21 | Dmg森精機株式会社 | Machine Tools |
US9743929B2 (en) | 2014-03-26 | 2017-08-29 | Ethicon Llc | Modular powered surgical instrument with detachable shaft assemblies |
US9820738B2 (en) | 2014-03-26 | 2017-11-21 | Ethicon Llc | Surgical instrument comprising interactive systems |
BR112016021943B1 (en) | 2014-03-26 | 2022-06-14 | Ethicon Endo-Surgery, Llc | SURGICAL INSTRUMENT FOR USE BY AN OPERATOR IN A SURGICAL PROCEDURE |
US9826977B2 (en) | 2014-03-26 | 2017-11-28 | Ethicon Llc | Sterilization verification circuit |
US10206677B2 (en) | 2014-09-26 | 2019-02-19 | Ethicon Llc | Surgical staple and driver arrangements for staple cartridges |
US10542988B2 (en) | 2014-04-16 | 2020-01-28 | Ethicon Llc | End effector comprising an anvil including projections extending therefrom |
CN106456176B (en) | 2014-04-16 | 2019-06-28 | 伊西康内外科有限责任公司 | Fastener cartridge including the extension with various configuration |
US20150297222A1 (en) | 2014-04-16 | 2015-10-22 | Ethicon Endo-Surgery, Inc. | Fastener cartridges including extensions having different configurations |
CN106456158B (en) | 2014-04-16 | 2019-02-05 | 伊西康内外科有限责任公司 | Fastener cartridge including non-uniform fastener |
BR112016023807B1 (en) | 2014-04-16 | 2022-07-12 | Ethicon Endo-Surgery, Llc | CARTRIDGE SET OF FASTENERS FOR USE WITH A SURGICAL INSTRUMENT |
BR112017004361B1 (en) | 2014-09-05 | 2023-04-11 | Ethicon Llc | ELECTRONIC SYSTEM FOR A SURGICAL INSTRUMENT |
US11311294B2 (en) | 2014-09-05 | 2022-04-26 | Cilag Gmbh International | Powered medical device including measurement of closure state of jaws |
US10016199B2 (en) | 2014-09-05 | 2018-07-10 | Ethicon Llc | Polarity of hall magnet to identify cartridge type |
US10105142B2 (en) | 2014-09-18 | 2018-10-23 | Ethicon Llc | Surgical stapler with plurality of cutting elements |
CN107427300B (en) | 2014-09-26 | 2020-12-04 | 伊西康有限责任公司 | Surgical suture buttress and buttress material |
US11523821B2 (en) | 2014-09-26 | 2022-12-13 | Cilag Gmbh International | Method for creating a flexible staple line |
US9945755B2 (en) | 2014-09-30 | 2018-04-17 | Marquip, Llc | Methods for using digitized sound patterns to monitor operation of automated machinery |
US10076325B2 (en) | 2014-10-13 | 2018-09-18 | Ethicon Llc | Surgical stapling apparatus comprising a tissue stop |
US9924944B2 (en) | 2014-10-16 | 2018-03-27 | Ethicon Llc | Staple cartridge comprising an adjunct material |
US11141153B2 (en) | 2014-10-29 | 2021-10-12 | Cilag Gmbh International | Staple cartridges comprising driver arrangements |
US10517594B2 (en) | 2014-10-29 | 2019-12-31 | Ethicon Llc | Cartridge assemblies for surgical staplers |
US9844376B2 (en) | 2014-11-06 | 2017-12-19 | Ethicon Llc | Staple cartridge comprising a releasable adjunct material |
US10736636B2 (en) | 2014-12-10 | 2020-08-11 | Ethicon Llc | Articulatable surgical instrument system |
US9844375B2 (en) | 2014-12-18 | 2017-12-19 | Ethicon Llc | Drive arrangements for articulatable surgical instruments |
RU2703684C2 (en) | 2014-12-18 | 2019-10-21 | ЭТИКОН ЭНДО-СЕРДЖЕРИ, ЭлЭлСи | Surgical instrument with anvil which is selectively movable relative to staple cartridge around discrete fixed axis |
US9844374B2 (en) | 2014-12-18 | 2017-12-19 | Ethicon Llc | Surgical instrument systems comprising an articulatable end effector and means for adjusting the firing stroke of a firing member |
US10085748B2 (en) | 2014-12-18 | 2018-10-02 | Ethicon Llc | Locking arrangements for detachable shaft assemblies with articulatable surgical end effectors |
US10188385B2 (en) | 2014-12-18 | 2019-01-29 | Ethicon Llc | Surgical instrument system comprising lockable systems |
US9987000B2 (en) | 2014-12-18 | 2018-06-05 | Ethicon Llc | Surgical instrument assembly comprising a flexible articulation system |
US9943309B2 (en) | 2014-12-18 | 2018-04-17 | Ethicon Llc | Surgical instruments with articulatable end effectors and movable firing beam support arrangements |
US11154301B2 (en) | 2015-02-27 | 2021-10-26 | Cilag Gmbh International | Modular stapling assembly |
US10180463B2 (en) | 2015-02-27 | 2019-01-15 | Ethicon Llc | Surgical apparatus configured to assess whether a performance parameter of the surgical apparatus is within an acceptable performance band |
US10321907B2 (en) | 2015-02-27 | 2019-06-18 | Ethicon Llc | System for monitoring whether a surgical instrument needs to be serviced |
JP2020121162A (en) | 2015-03-06 | 2020-08-13 | エシコン エルエルシーEthicon LLC | Time dependent evaluation of sensor data to determine stability element, creep element and viscoelastic element of measurement |
US9993248B2 (en) | 2015-03-06 | 2018-06-12 | Ethicon Endo-Surgery, Llc | Smart sensors with local signal processing |
US9924961B2 (en) | 2015-03-06 | 2018-03-27 | Ethicon Endo-Surgery, Llc | Interactive feedback system for powered surgical instruments |
US9901342B2 (en) | 2015-03-06 | 2018-02-27 | Ethicon Endo-Surgery, Llc | Signal and power communication system positioned on a rotatable shaft |
US10617412B2 (en) | 2015-03-06 | 2020-04-14 | Ethicon Llc | System for detecting the mis-insertion of a staple cartridge into a surgical stapler |
US10245033B2 (en) | 2015-03-06 | 2019-04-02 | Ethicon Llc | Surgical instrument comprising a lockable battery housing |
US10687806B2 (en) | 2015-03-06 | 2020-06-23 | Ethicon Llc | Adaptive tissue compression techniques to adjust closure rates for multiple tissue types |
US10441279B2 (en) | 2015-03-06 | 2019-10-15 | Ethicon Llc | Multiple level thresholds to modify operation of powered surgical instruments |
US9808246B2 (en) | 2015-03-06 | 2017-11-07 | Ethicon Endo-Surgery, Llc | Method of operating a powered surgical instrument |
US10052044B2 (en) | 2015-03-06 | 2018-08-21 | Ethicon Llc | Time dependent evaluation of sensor data to determine stability, creep, and viscoelastic elements of measures |
US10390825B2 (en) | 2015-03-31 | 2019-08-27 | Ethicon Llc | Surgical instrument with progressive rotary drive systems |
US11058425B2 (en) | 2015-08-17 | 2021-07-13 | Ethicon Llc | Implantable layers for a surgical instrument |
US10105139B2 (en) | 2015-09-23 | 2018-10-23 | Ethicon Llc | Surgical stapler having downstream current-based motor control |
US10238386B2 (en) | 2015-09-23 | 2019-03-26 | Ethicon Llc | Surgical stapler having motor control based on an electrical parameter related to a motor current |
US10327769B2 (en) | 2015-09-23 | 2019-06-25 | Ethicon Llc | Surgical stapler having motor control based on a drive system component |
US10363036B2 (en) | 2015-09-23 | 2019-07-30 | Ethicon Llc | Surgical stapler having force-based motor control |
US10299878B2 (en) | 2015-09-25 | 2019-05-28 | Ethicon Llc | Implantable adjunct systems for determining adjunct skew |
US10285699B2 (en) | 2015-09-30 | 2019-05-14 | Ethicon Llc | Compressible adjunct |
US10524788B2 (en) | 2015-09-30 | 2020-01-07 | Ethicon Llc | Compressible adjunct with attachment regions |
US10980539B2 (en) | 2015-09-30 | 2021-04-20 | Ethicon Llc | Implantable adjunct comprising bonded layers |
US11890015B2 (en) | 2015-09-30 | 2024-02-06 | Cilag Gmbh International | Compressible adjunct with crossing spacer fibers |
US10265068B2 (en) | 2015-12-30 | 2019-04-23 | Ethicon Llc | Surgical instruments with separable motors and motor control circuits |
US10368865B2 (en) | 2015-12-30 | 2019-08-06 | Ethicon Llc | Mechanisms for compensating for drivetrain failure in powered surgical instruments |
US10292704B2 (en) | 2015-12-30 | 2019-05-21 | Ethicon Llc | Mechanisms for compensating for battery pack failure in powered surgical instruments |
JP6911054B2 (en) | 2016-02-09 | 2021-07-28 | エシコン エルエルシーEthicon LLC | Surgical instruments with asymmetric joint composition |
US11213293B2 (en) | 2016-02-09 | 2022-01-04 | Cilag Gmbh International | Articulatable surgical instruments with single articulation link arrangements |
US10653413B2 (en) | 2016-02-09 | 2020-05-19 | Ethicon Llc | Surgical instruments with an end effector that is highly articulatable relative to an elongate shaft assembly |
US11224426B2 (en) | 2016-02-12 | 2022-01-18 | Cilag Gmbh International | Mechanisms for compensating for drivetrain failure in powered surgical instruments |
US20170231628A1 (en) * | 2016-02-12 | 2017-08-17 | Ethicon Endo-Surgery, Llc | Mechanisms for compensating for drivetrain failure in powered surgical instruments |
US10258331B2 (en) | 2016-02-12 | 2019-04-16 | Ethicon Llc | Mechanisms for compensating for drivetrain failure in powered surgical instruments |
US10448948B2 (en) | 2016-02-12 | 2019-10-22 | Ethicon Llc | Mechanisms for compensating for drivetrain failure in powered surgical instruments |
US10413297B2 (en) | 2016-04-01 | 2019-09-17 | Ethicon Llc | Surgical stapling system configured to apply annular rows of staples having different heights |
US10617413B2 (en) | 2016-04-01 | 2020-04-14 | Ethicon Llc | Closure system arrangements for surgical cutting and stapling devices with separate and distinct firing shafts |
US10426467B2 (en) | 2016-04-15 | 2019-10-01 | Ethicon Llc | Surgical instrument with detection sensors |
US11179150B2 (en) | 2016-04-15 | 2021-11-23 | Cilag Gmbh International | Systems and methods for controlling a surgical stapling and cutting instrument |
US10405859B2 (en) | 2016-04-15 | 2019-09-10 | Ethicon Llc | Surgical instrument with adjustable stop/start control during a firing motion |
US10357247B2 (en) | 2016-04-15 | 2019-07-23 | Ethicon Llc | Surgical instrument with multiple program responses during a firing motion |
US10828028B2 (en) | 2016-04-15 | 2020-11-10 | Ethicon Llc | Surgical instrument with multiple program responses during a firing motion |
US10456137B2 (en) | 2016-04-15 | 2019-10-29 | Ethicon Llc | Staple formation detection mechanisms |
US10492783B2 (en) | 2016-04-15 | 2019-12-03 | Ethicon, Llc | Surgical instrument with improved stop/start control during a firing motion |
US11607239B2 (en) | 2016-04-15 | 2023-03-21 | Cilag Gmbh International | Systems and methods for controlling a surgical stapling and cutting instrument |
US10335145B2 (en) | 2016-04-15 | 2019-07-02 | Ethicon Llc | Modular surgical instrument with configurable operating mode |
US11317917B2 (en) | 2016-04-18 | 2022-05-03 | Cilag Gmbh International | Surgical stapling system comprising a lockable firing assembly |
US10426469B2 (en) | 2016-04-18 | 2019-10-01 | Ethicon Llc | Surgical instrument comprising a primary firing lockout and a secondary firing lockout |
US20170296173A1 (en) | 2016-04-18 | 2017-10-19 | Ethicon Endo-Surgery, Llc | Method for operating a surgical instrument |
US10893864B2 (en) | 2016-12-21 | 2021-01-19 | Ethicon | Staple cartridges and arrangements of staples and staple cavities therein |
US10639035B2 (en) | 2016-12-21 | 2020-05-05 | Ethicon Llc | Surgical stapling instruments and replaceable tool assemblies thereof |
US11090048B2 (en) | 2016-12-21 | 2021-08-17 | Cilag Gmbh International | Method for resetting a fuse of a surgical instrument shaft |
CN110114014B (en) | 2016-12-21 | 2022-08-09 | 爱惜康有限责任公司 | Surgical instrument system including end effector and firing assembly lockout |
US10426471B2 (en) | 2016-12-21 | 2019-10-01 | Ethicon Llc | Surgical instrument with multiple failure response modes |
US20180168577A1 (en) | 2016-12-21 | 2018-06-21 | Ethicon Endo-Surgery, Llc | Axially movable closure system arrangements for applying closure motions to jaws of surgical instruments |
US10588630B2 (en) | 2016-12-21 | 2020-03-17 | Ethicon Llc | Surgical tool assemblies with closure stroke reduction features |
US10617414B2 (en) | 2016-12-21 | 2020-04-14 | Ethicon Llc | Closure member arrangements for surgical instruments |
US11419606B2 (en) | 2016-12-21 | 2022-08-23 | Cilag Gmbh International | Shaft assembly comprising a clutch configured to adapt the output of a rotary firing member to two different systems |
US10758230B2 (en) | 2016-12-21 | 2020-09-01 | Ethicon Llc | Surgical instrument with primary and safety processors |
US10779823B2 (en) | 2016-12-21 | 2020-09-22 | Ethicon Llc | Firing member pin angle |
US10667809B2 (en) | 2016-12-21 | 2020-06-02 | Ethicon Llc | Staple cartridge and staple cartridge channel comprising windows defined therein |
JP2020501779A (en) | 2016-12-21 | 2020-01-23 | エシコン エルエルシーEthicon LLC | Surgical stapling system |
US20180168615A1 (en) | 2016-12-21 | 2018-06-21 | Ethicon Endo-Surgery, Llc | Method of deforming staples from two different types of staple cartridges with the same surgical stapling instrument |
US10835245B2 (en) | 2016-12-21 | 2020-11-17 | Ethicon Llc | Method for attaching a shaft assembly to a surgical instrument and, alternatively, to a surgical robot |
US11134942B2 (en) | 2016-12-21 | 2021-10-05 | Cilag Gmbh International | Surgical stapling instruments and staple-forming anvils |
CN110099619B (en) | 2016-12-21 | 2022-07-15 | 爱惜康有限责任公司 | Lockout device for surgical end effector and replaceable tool assembly |
US10682138B2 (en) | 2016-12-21 | 2020-06-16 | Ethicon Llc | Bilaterally asymmetric staple forming pocket pairs |
JP7010956B2 (en) | 2016-12-21 | 2022-01-26 | エシコン エルエルシー | How to staple tissue |
US10888322B2 (en) | 2016-12-21 | 2021-01-12 | Ethicon Llc | Surgical instrument comprising a cutting member |
US11653914B2 (en) | 2017-06-20 | 2023-05-23 | Cilag Gmbh International | Systems and methods for controlling motor velocity of a surgical stapling and cutting instrument according to articulation angle of end effector |
USD890784S1 (en) | 2017-06-20 | 2020-07-21 | Ethicon Llc | Display panel with changeable graphical user interface |
US11071554B2 (en) | 2017-06-20 | 2021-07-27 | Cilag Gmbh International | Closed loop feedback control of motor velocity of a surgical stapling and cutting instrument based on magnitude of velocity error measurements |
US10327767B2 (en) | 2017-06-20 | 2019-06-25 | Ethicon Llc | Control of motor velocity of a surgical stapling and cutting instrument based on angle of articulation |
US10624633B2 (en) | 2017-06-20 | 2020-04-21 | Ethicon Llc | Systems and methods for controlling motor velocity of a surgical stapling and cutting instrument |
US10368864B2 (en) | 2017-06-20 | 2019-08-06 | Ethicon Llc | Systems and methods for controlling displaying motor velocity for a surgical instrument |
US10888321B2 (en) | 2017-06-20 | 2021-01-12 | Ethicon Llc | Systems and methods for controlling velocity of a displacement member of a surgical stapling and cutting instrument |
US10881399B2 (en) | 2017-06-20 | 2021-01-05 | Ethicon Llc | Techniques for adaptive control of motor velocity of a surgical stapling and cutting instrument |
US10646220B2 (en) | 2017-06-20 | 2020-05-12 | Ethicon Llc | Systems and methods for controlling displacement member velocity for a surgical instrument |
US11382638B2 (en) | 2017-06-20 | 2022-07-12 | Cilag Gmbh International | Closed loop feedback control of motor velocity of a surgical stapling and cutting instrument based on measured time over a specified displacement distance |
US10980537B2 (en) | 2017-06-20 | 2021-04-20 | Ethicon Llc | Closed loop feedback control of motor velocity of a surgical stapling and cutting instrument based on measured time over a specified number of shaft rotations |
US10307170B2 (en) | 2017-06-20 | 2019-06-04 | Ethicon Llc | Method for closed loop control of motor velocity of a surgical stapling and cutting instrument |
US10813639B2 (en) | 2017-06-20 | 2020-10-27 | Ethicon Llc | Closed loop feedback control of motor velocity of a surgical stapling and cutting instrument based on system conditions |
US11090046B2 (en) | 2017-06-20 | 2021-08-17 | Cilag Gmbh International | Systems and methods for controlling displacement member motion of a surgical stapling and cutting instrument |
US11517325B2 (en) | 2017-06-20 | 2022-12-06 | Cilag Gmbh International | Closed loop feedback control of motor velocity of a surgical stapling and cutting instrument based on measured displacement distance traveled over a specified time interval |
US10390841B2 (en) | 2017-06-20 | 2019-08-27 | Ethicon Llc | Control of motor velocity of a surgical stapling and cutting instrument based on angle of articulation |
USD879808S1 (en) | 2017-06-20 | 2020-03-31 | Ethicon Llc | Display panel with graphical user interface |
USD879809S1 (en) | 2017-06-20 | 2020-03-31 | Ethicon Llc | Display panel with changeable graphical user interface |
US10779820B2 (en) | 2017-06-20 | 2020-09-22 | Ethicon Llc | Systems and methods for controlling motor speed according to user input for a surgical instrument |
US10881396B2 (en) | 2017-06-20 | 2021-01-05 | Ethicon Llc | Surgical instrument with variable duration trigger arrangement |
US10856869B2 (en) | 2017-06-27 | 2020-12-08 | Ethicon Llc | Surgical anvil arrangements |
US11266405B2 (en) | 2017-06-27 | 2022-03-08 | Cilag Gmbh International | Surgical anvil manufacturing methods |
US11324503B2 (en) | 2017-06-27 | 2022-05-10 | Cilag Gmbh International | Surgical firing member arrangements |
US11090049B2 (en) | 2017-06-27 | 2021-08-17 | Cilag Gmbh International | Staple forming pocket arrangements |
US10772629B2 (en) | 2017-06-27 | 2020-09-15 | Ethicon Llc | Surgical anvil arrangements |
US10993716B2 (en) | 2017-06-27 | 2021-05-04 | Ethicon Llc | Surgical anvil arrangements |
USD869655S1 (en) | 2017-06-28 | 2019-12-10 | Ethicon Llc | Surgical fastener cartridge |
US11564686B2 (en) | 2017-06-28 | 2023-01-31 | Cilag Gmbh International | Surgical shaft assemblies with flexible interfaces |
US10588633B2 (en) | 2017-06-28 | 2020-03-17 | Ethicon Llc | Surgical instruments with open and closable jaws and axially movable firing member that is initially parked in close proximity to the jaws prior to firing |
US11259805B2 (en) | 2017-06-28 | 2022-03-01 | Cilag Gmbh International | Surgical instrument comprising firing member supports |
EP4070740A1 (en) | 2017-06-28 | 2022-10-12 | Cilag GmbH International | Surgical instrument comprising selectively actuatable rotatable couplers |
USD854151S1 (en) | 2017-06-28 | 2019-07-16 | Ethicon Llc | Surgical instrument shaft |
US10211586B2 (en) | 2017-06-28 | 2019-02-19 | Ethicon Llc | Surgical shaft assemblies with watertight housings |
US11000279B2 (en) | 2017-06-28 | 2021-05-11 | Ethicon Llc | Surgical instrument comprising an articulation system ratio |
US10765427B2 (en) | 2017-06-28 | 2020-09-08 | Ethicon Llc | Method for articulating a surgical instrument |
USD851762S1 (en) | 2017-06-28 | 2019-06-18 | Ethicon Llc | Anvil |
USD906355S1 (en) | 2017-06-28 | 2020-12-29 | Ethicon Llc | Display screen or portion thereof with a graphical user interface for a surgical instrument |
US10716614B2 (en) | 2017-06-28 | 2020-07-21 | Ethicon Llc | Surgical shaft assemblies with slip ring assemblies with increased contact pressure |
US10903685B2 (en) | 2017-06-28 | 2021-01-26 | Ethicon Llc | Surgical shaft assemblies with slip ring assemblies forming capacitive channels |
US11246592B2 (en) | 2017-06-28 | 2022-02-15 | Cilag Gmbh International | Surgical instrument comprising an articulation system lockable to a frame |
US10258418B2 (en) | 2017-06-29 | 2019-04-16 | Ethicon Llc | System for controlling articulation forces |
US11007022B2 (en) | 2017-06-29 | 2021-05-18 | Ethicon Llc | Closed loop velocity control techniques based on sensed tissue parameters for robotic surgical instrument |
US10398434B2 (en) | 2017-06-29 | 2019-09-03 | Ethicon Llc | Closed loop velocity control of closure member for robotic surgical instrument |
US10932772B2 (en) | 2017-06-29 | 2021-03-02 | Ethicon Llc | Methods for closed loop velocity control for robotic surgical instrument |
US10898183B2 (en) | 2017-06-29 | 2021-01-26 | Ethicon Llc | Robotic surgical instrument with closed loop feedback techniques for advancement of closure member during firing |
US11471155B2 (en) | 2017-08-03 | 2022-10-18 | Cilag Gmbh International | Surgical system bailout |
US11304695B2 (en) | 2017-08-03 | 2022-04-19 | Cilag Gmbh International | Surgical system shaft interconnection |
US11974742B2 (en) | 2017-08-03 | 2024-05-07 | Cilag Gmbh International | Surgical system comprising an articulation bailout |
US11944300B2 (en) | 2017-08-03 | 2024-04-02 | Cilag Gmbh International | Method for operating a surgical system bailout |
KR101921002B1 (en) * | 2017-08-08 | 2018-11-22 | 인천국제공항공사 | Aircraft noise analyzation system, and method thereof |
US10743872B2 (en) | 2017-09-29 | 2020-08-18 | Ethicon Llc | System and methods for controlling a display of a surgical instrument |
USD917500S1 (en) | 2017-09-29 | 2021-04-27 | Ethicon Llc | Display screen or portion thereof with graphical user interface |
US10765429B2 (en) | 2017-09-29 | 2020-09-08 | Ethicon Llc | Systems and methods for providing alerts according to the operational state of a surgical instrument |
US11399829B2 (en) | 2017-09-29 | 2022-08-02 | Cilag Gmbh International | Systems and methods of initiating a power shutdown mode for a surgical instrument |
USD907648S1 (en) | 2017-09-29 | 2021-01-12 | Ethicon Llc | Display screen or portion thereof with animated graphical user interface |
US10796471B2 (en) | 2017-09-29 | 2020-10-06 | Ethicon Llc | Systems and methods of displaying a knife position for a surgical instrument |
US10729501B2 (en) | 2017-09-29 | 2020-08-04 | Ethicon Llc | Systems and methods for language selection of a surgical instrument |
USD907647S1 (en) | 2017-09-29 | 2021-01-12 | Ethicon Llc | Display screen or portion thereof with animated graphical user interface |
US11090075B2 (en) | 2017-10-30 | 2021-08-17 | Cilag Gmbh International | Articulation features for surgical end effector |
US11134944B2 (en) | 2017-10-30 | 2021-10-05 | Cilag Gmbh International | Surgical stapler knife motion controls |
US10779903B2 (en) | 2017-10-31 | 2020-09-22 | Ethicon Llc | Positive shaft rotation lock activated by jaw closure |
US10842490B2 (en) | 2017-10-31 | 2020-11-24 | Ethicon Llc | Cartridge body design with force reduction based on firing completion |
US10779825B2 (en) | 2017-12-15 | 2020-09-22 | Ethicon Llc | Adapters with end effector position sensing and control arrangements for use in connection with electromechanical surgical instruments |
US10779826B2 (en) | 2017-12-15 | 2020-09-22 | Ethicon Llc | Methods of operating surgical end effectors |
US11197670B2 (en) | 2017-12-15 | 2021-12-14 | Cilag Gmbh International | Surgical end effectors with pivotal jaws configured to touch at their respective distal ends when fully closed |
US11033267B2 (en) | 2017-12-15 | 2021-06-15 | Ethicon Llc | Systems and methods of controlling a clamping member firing rate of a surgical instrument |
US11006955B2 (en) | 2017-12-15 | 2021-05-18 | Ethicon Llc | End effectors with positive jaw opening features for use with adapters for electromechanical surgical instruments |
US11071543B2 (en) | 2017-12-15 | 2021-07-27 | Cilag Gmbh International | Surgical end effectors with clamping assemblies configured to increase jaw aperture ranges |
US10687813B2 (en) | 2017-12-15 | 2020-06-23 | Ethicon Llc | Adapters with firing stroke sensing arrangements for use in connection with electromechanical surgical instruments |
US10743875B2 (en) | 2017-12-15 | 2020-08-18 | Ethicon Llc | Surgical end effectors with jaw stiffener arrangements configured to permit monitoring of firing member |
US10966718B2 (en) | 2017-12-15 | 2021-04-06 | Ethicon Llc | Dynamic clamping assemblies with improved wear characteristics for use in connection with electromechanical surgical instruments |
US10743874B2 (en) | 2017-12-15 | 2020-08-18 | Ethicon Llc | Sealed adapters for use with electromechanical surgical instruments |
US10828033B2 (en) | 2017-12-15 | 2020-11-10 | Ethicon Llc | Handheld electromechanical surgical instruments with improved motor control arrangements for positioning components of an adapter coupled thereto |
US10869666B2 (en) | 2017-12-15 | 2020-12-22 | Ethicon Llc | Adapters with control systems for controlling multiple motors of an electromechanical surgical instrument |
US10729509B2 (en) | 2017-12-19 | 2020-08-04 | Ethicon Llc | Surgical instrument comprising closure and firing locking mechanism |
US11020112B2 (en) | 2017-12-19 | 2021-06-01 | Ethicon Llc | Surgical tools configured for interchangeable use with different controller interfaces |
USD910847S1 (en) | 2017-12-19 | 2021-02-16 | Ethicon Llc | Surgical instrument assembly |
US11045270B2 (en) | 2017-12-19 | 2021-06-29 | Cilag Gmbh International | Robotic attachment comprising exterior drive actuator |
US10716565B2 (en) | 2017-12-19 | 2020-07-21 | Ethicon Llc | Surgical instruments with dual articulation drivers |
US10835330B2 (en) | 2017-12-19 | 2020-11-17 | Ethicon Llc | Method for determining the position of a rotatable jaw of a surgical instrument attachment assembly |
US11076853B2 (en) | 2017-12-21 | 2021-08-03 | Cilag Gmbh International | Systems and methods of displaying a knife position during transection for a surgical instrument |
US11337691B2 (en) | 2017-12-21 | 2022-05-24 | Cilag Gmbh International | Surgical instrument configured to determine firing path |
US11311290B2 (en) | 2017-12-21 | 2022-04-26 | Cilag Gmbh International | Surgical instrument comprising an end effector dampener |
US11129680B2 (en) | 2017-12-21 | 2021-09-28 | Cilag Gmbh International | Surgical instrument comprising a projector |
US11253256B2 (en) | 2018-08-20 | 2022-02-22 | Cilag Gmbh International | Articulatable motor powered surgical instruments with dedicated articulation motor arrangements |
USD914878S1 (en) | 2018-08-20 | 2021-03-30 | Ethicon Llc | Surgical instrument anvil |
US10779821B2 (en) | 2018-08-20 | 2020-09-22 | Ethicon Llc | Surgical stapler anvils with tissue stop features configured to avoid tissue pinch |
US11324501B2 (en) | 2018-08-20 | 2022-05-10 | Cilag Gmbh International | Surgical stapling devices with improved closure members |
US11039834B2 (en) | 2018-08-20 | 2021-06-22 | Cilag Gmbh International | Surgical stapler anvils with staple directing protrusions and tissue stability features |
US11291440B2 (en) | 2018-08-20 | 2022-04-05 | Cilag Gmbh International | Method for operating a powered articulatable surgical instrument |
US10856870B2 (en) | 2018-08-20 | 2020-12-08 | Ethicon Llc | Switching arrangements for motor powered articulatable surgical instruments |
US10912559B2 (en) | 2018-08-20 | 2021-02-09 | Ethicon Llc | Reinforced deformable anvil tip for surgical stapler anvil |
US10842492B2 (en) | 2018-08-20 | 2020-11-24 | Ethicon Llc | Powered articulatable surgical instruments with clutching and locking arrangements for linking an articulation drive system to a firing drive system |
US11207065B2 (en) | 2018-08-20 | 2021-12-28 | Cilag Gmbh International | Method for fabricating surgical stapler anvils |
US11045192B2 (en) | 2018-08-20 | 2021-06-29 | Cilag Gmbh International | Fabricating techniques for surgical stapler anvils |
US11083458B2 (en) | 2018-08-20 | 2021-08-10 | Cilag Gmbh International | Powered surgical instruments with clutching arrangements to convert linear drive motions to rotary drive motions |
US11147551B2 (en) | 2019-03-25 | 2021-10-19 | Cilag Gmbh International | Firing drive arrangements for surgical systems |
US11172929B2 (en) | 2019-03-25 | 2021-11-16 | Cilag Gmbh International | Articulation drive arrangements for surgical systems |
US11147553B2 (en) | 2019-03-25 | 2021-10-19 | Cilag Gmbh International | Firing drive arrangements for surgical systems |
US11696761B2 (en) | 2019-03-25 | 2023-07-11 | Cilag Gmbh International | Firing drive arrangements for surgical systems |
US11253254B2 (en) | 2019-04-30 | 2022-02-22 | Cilag Gmbh International | Shaft rotation actuator on a surgical instrument |
US11452528B2 (en) | 2019-04-30 | 2022-09-27 | Cilag Gmbh International | Articulation actuators for a surgical instrument |
US11648009B2 (en) | 2019-04-30 | 2023-05-16 | Cilag Gmbh International | Rotatable jaw tip for a surgical instrument |
US11426251B2 (en) | 2019-04-30 | 2022-08-30 | Cilag Gmbh International | Articulation directional lights on a surgical instrument |
US11903581B2 (en) | 2019-04-30 | 2024-02-20 | Cilag Gmbh International | Methods for stapling tissue using a surgical instrument |
US11432816B2 (en) | 2019-04-30 | 2022-09-06 | Cilag Gmbh International | Articulation pin for a surgical instrument |
US11471157B2 (en) | 2019-04-30 | 2022-10-18 | Cilag Gmbh International | Articulation control mapping for a surgical instrument |
US11399837B2 (en) | 2019-06-28 | 2022-08-02 | Cilag Gmbh International | Mechanisms for motor control adjustments of a motorized surgical instrument |
US11051807B2 (en) | 2019-06-28 | 2021-07-06 | Cilag Gmbh International | Packaging assembly including a particulate trap |
US11376098B2 (en) | 2019-06-28 | 2022-07-05 | Cilag Gmbh International | Surgical instrument system comprising an RFID system |
US11553971B2 (en) | 2019-06-28 | 2023-01-17 | Cilag Gmbh International | Surgical RFID assemblies for display and communication |
US11771419B2 (en) | 2019-06-28 | 2023-10-03 | Cilag Gmbh International | Packaging for a replaceable component of a surgical stapling system |
US11523822B2 (en) | 2019-06-28 | 2022-12-13 | Cilag Gmbh International | Battery pack including a circuit interrupter |
US11224497B2 (en) | 2019-06-28 | 2022-01-18 | Cilag Gmbh International | Surgical systems with multiple RFID tags |
US11246678B2 (en) | 2019-06-28 | 2022-02-15 | Cilag Gmbh International | Surgical stapling system having a frangible RFID tag |
US11259803B2 (en) | 2019-06-28 | 2022-03-01 | Cilag Gmbh International | Surgical stapling system having an information encryption protocol |
US11478241B2 (en) | 2019-06-28 | 2022-10-25 | Cilag Gmbh International | Staple cartridge including projections |
US11660163B2 (en) | 2019-06-28 | 2023-05-30 | Cilag Gmbh International | Surgical system with RFID tags for updating motor assembly parameters |
US11497492B2 (en) | 2019-06-28 | 2022-11-15 | Cilag Gmbh International | Surgical instrument including an articulation lock |
US12004740B2 (en) | 2019-06-28 | 2024-06-11 | Cilag Gmbh International | Surgical stapling system having an information decryption protocol |
US11350938B2 (en) | 2019-06-28 | 2022-06-07 | Cilag Gmbh International | Surgical instrument comprising an aligned rfid sensor |
US11627959B2 (en) | 2019-06-28 | 2023-04-18 | Cilag Gmbh International | Surgical instruments including manual and powered system lockouts |
US11426167B2 (en) | 2019-06-28 | 2022-08-30 | Cilag Gmbh International | Mechanisms for proper anvil attachment surgical stapling head assembly |
US11291451B2 (en) | 2019-06-28 | 2022-04-05 | Cilag Gmbh International | Surgical instrument with battery compatibility verification functionality |
US11464601B2 (en) | 2019-06-28 | 2022-10-11 | Cilag Gmbh International | Surgical instrument comprising an RFID system for tracking a movable component |
US11638587B2 (en) | 2019-06-28 | 2023-05-02 | Cilag Gmbh International | RFID identification systems for surgical instruments |
US11684434B2 (en) | 2019-06-28 | 2023-06-27 | Cilag Gmbh International | Surgical RFID assemblies for instrument operational setting control |
US11298132B2 (en) | 2019-06-28 | 2022-04-12 | Cilag GmbH Inlernational | Staple cartridge including a honeycomb extension |
US11219455B2 (en) | 2019-06-28 | 2022-01-11 | Cilag Gmbh International | Surgical instrument including a lockout key |
US11298127B2 (en) | 2019-06-28 | 2022-04-12 | Cilag GmbH Interational | Surgical stapling system having a lockout mechanism for an incompatible cartridge |
US11559304B2 (en) | 2019-12-19 | 2023-01-24 | Cilag Gmbh International | Surgical instrument comprising a rapid closure mechanism |
US11464512B2 (en) | 2019-12-19 | 2022-10-11 | Cilag Gmbh International | Staple cartridge comprising a curved deck surface |
US11446029B2 (en) | 2019-12-19 | 2022-09-20 | Cilag Gmbh International | Staple cartridge comprising projections extending from a curved deck surface |
US11701111B2 (en) | 2019-12-19 | 2023-07-18 | Cilag Gmbh International | Method for operating a surgical stapling instrument |
US11291447B2 (en) | 2019-12-19 | 2022-04-05 | Cilag Gmbh International | Stapling instrument comprising independent jaw closing and staple firing systems |
US11529137B2 (en) | 2019-12-19 | 2022-12-20 | Cilag Gmbh International | Staple cartridge comprising driver retention members |
US11911032B2 (en) | 2019-12-19 | 2024-02-27 | Cilag Gmbh International | Staple cartridge comprising a seating cam |
US11529139B2 (en) | 2019-12-19 | 2022-12-20 | Cilag Gmbh International | Motor driven surgical instrument |
US11844520B2 (en) | 2019-12-19 | 2023-12-19 | Cilag Gmbh International | Staple cartridge comprising driver retention members |
US11931033B2 (en) | 2019-12-19 | 2024-03-19 | Cilag Gmbh International | Staple cartridge comprising a latch lockout |
US11576672B2 (en) | 2019-12-19 | 2023-02-14 | Cilag Gmbh International | Surgical instrument comprising a closure system including a closure member and an opening member driven by a drive screw |
US11607219B2 (en) | 2019-12-19 | 2023-03-21 | Cilag Gmbh International | Staple cartridge comprising a detachable tissue cutting knife |
US11304696B2 (en) | 2019-12-19 | 2022-04-19 | Cilag Gmbh International | Surgical instrument comprising a powered articulation system |
US11234698B2 (en) | 2019-12-19 | 2022-02-01 | Cilag Gmbh International | Stapling system comprising a clamp lockout and a firing lockout |
US11504122B2 (en) | 2019-12-19 | 2022-11-22 | Cilag Gmbh International | Surgical instrument comprising a nested firing member |
USD975851S1 (en) | 2020-06-02 | 2023-01-17 | Cilag Gmbh International | Staple cartridge |
USD975278S1 (en) | 2020-06-02 | 2023-01-10 | Cilag Gmbh International | Staple cartridge |
USD974560S1 (en) | 2020-06-02 | 2023-01-03 | Cilag Gmbh International | Staple cartridge |
USD967421S1 (en) | 2020-06-02 | 2022-10-18 | Cilag Gmbh International | Staple cartridge |
USD966512S1 (en) | 2020-06-02 | 2022-10-11 | Cilag Gmbh International | Staple cartridge |
USD976401S1 (en) | 2020-06-02 | 2023-01-24 | Cilag Gmbh International | Staple cartridge |
USD975850S1 (en) | 2020-06-02 | 2023-01-17 | Cilag Gmbh International | Staple cartridge |
US11638582B2 (en) | 2020-07-28 | 2023-05-02 | Cilag Gmbh International | Surgical instruments with torsion spine drive arrangements |
USD1013170S1 (en) | 2020-10-29 | 2024-01-30 | Cilag Gmbh International | Surgical instrument assembly |
US11717289B2 (en) | 2020-10-29 | 2023-08-08 | Cilag Gmbh International | Surgical instrument comprising an indicator which indicates that an articulation drive is actuatable |
US11844518B2 (en) | 2020-10-29 | 2023-12-19 | Cilag Gmbh International | Method for operating a surgical instrument |
USD980425S1 (en) | 2020-10-29 | 2023-03-07 | Cilag Gmbh International | Surgical instrument assembly |
US11534259B2 (en) | 2020-10-29 | 2022-12-27 | Cilag Gmbh International | Surgical instrument comprising an articulation indicator |
US11452526B2 (en) | 2020-10-29 | 2022-09-27 | Cilag Gmbh International | Surgical instrument comprising a staged voltage regulation start-up system |
US11517390B2 (en) | 2020-10-29 | 2022-12-06 | Cilag Gmbh International | Surgical instrument comprising a limited travel switch |
US11779330B2 (en) | 2020-10-29 | 2023-10-10 | Cilag Gmbh International | Surgical instrument comprising a jaw alignment system |
US11931025B2 (en) | 2020-10-29 | 2024-03-19 | Cilag Gmbh International | Surgical instrument comprising a releasable closure drive lock |
US11896217B2 (en) | 2020-10-29 | 2024-02-13 | Cilag Gmbh International | Surgical instrument comprising an articulation lock |
US11617577B2 (en) | 2020-10-29 | 2023-04-04 | Cilag Gmbh International | Surgical instrument comprising a sensor configured to sense whether an articulation drive of the surgical instrument is actuatable |
US11627960B2 (en) | 2020-12-02 | 2023-04-18 | Cilag Gmbh International | Powered surgical instruments with smart reload with separately attachable exteriorly mounted wiring connections |
US11653920B2 (en) | 2020-12-02 | 2023-05-23 | Cilag Gmbh International | Powered surgical instruments with communication interfaces through sterile barrier |
US11890010B2 (en) | 2020-12-02 | 2024-02-06 | Cllag GmbH International | Dual-sided reinforced reload for surgical instruments |
US11678882B2 (en) | 2020-12-02 | 2023-06-20 | Cilag Gmbh International | Surgical instruments with interactive features to remedy incidental sled movements |
US11737751B2 (en) | 2020-12-02 | 2023-08-29 | Cilag Gmbh International | Devices and methods of managing energy dissipated within sterile barriers of surgical instrument housings |
US11849943B2 (en) | 2020-12-02 | 2023-12-26 | Cilag Gmbh International | Surgical instrument with cartridge release mechanisms |
US11944296B2 (en) | 2020-12-02 | 2024-04-02 | Cilag Gmbh International | Powered surgical instruments with external connectors |
US11744581B2 (en) | 2020-12-02 | 2023-09-05 | Cilag Gmbh International | Powered surgical instruments with multi-phase tissue treatment |
US11653915B2 (en) | 2020-12-02 | 2023-05-23 | Cilag Gmbh International | Surgical instruments with sled location detection and adjustment features |
US11793514B2 (en) | 2021-02-26 | 2023-10-24 | Cilag Gmbh International | Staple cartridge comprising sensor array which may be embedded in cartridge body |
US11950779B2 (en) | 2021-02-26 | 2024-04-09 | Cilag Gmbh International | Method of powering and communicating with a staple cartridge |
US11925349B2 (en) | 2021-02-26 | 2024-03-12 | Cilag Gmbh International | Adjustment to transfer parameters to improve available power |
US11749877B2 (en) | 2021-02-26 | 2023-09-05 | Cilag Gmbh International | Stapling instrument comprising a signal antenna |
US11723657B2 (en) | 2021-02-26 | 2023-08-15 | Cilag Gmbh International | Adjustable communication based on available bandwidth and power capacity |
US11701113B2 (en) | 2021-02-26 | 2023-07-18 | Cilag Gmbh International | Stapling instrument comprising a separate power antenna and a data transfer antenna |
US11980362B2 (en) | 2021-02-26 | 2024-05-14 | Cilag Gmbh International | Surgical instrument system comprising a power transfer coil |
US11812964B2 (en) | 2021-02-26 | 2023-11-14 | Cilag Gmbh International | Staple cartridge comprising a power management circuit |
US11744583B2 (en) | 2021-02-26 | 2023-09-05 | Cilag Gmbh International | Distal communication array to tune frequency of RF systems |
US11751869B2 (en) | 2021-02-26 | 2023-09-12 | Cilag Gmbh International | Monitoring of multiple sensors over time to detect moving characteristics of tissue |
US11950777B2 (en) | 2021-02-26 | 2024-04-09 | Cilag Gmbh International | Staple cartridge comprising an information access control system |
US11730473B2 (en) | 2021-02-26 | 2023-08-22 | Cilag Gmbh International | Monitoring of manufacturing life-cycle |
US11696757B2 (en) | 2021-02-26 | 2023-07-11 | Cilag Gmbh International | Monitoring of internal systems to detect and track cartridge motion status |
US11717291B2 (en) | 2021-03-22 | 2023-08-08 | Cilag Gmbh International | Staple cartridge comprising staples configured to apply different tissue compression |
US11723658B2 (en) | 2021-03-22 | 2023-08-15 | Cilag Gmbh International | Staple cartridge comprising a firing lockout |
US11826012B2 (en) | 2021-03-22 | 2023-11-28 | Cilag Gmbh International | Stapling instrument comprising a pulsed motor-driven firing rack |
US11826042B2 (en) | 2021-03-22 | 2023-11-28 | Cilag Gmbh International | Surgical instrument comprising a firing drive including a selectable leverage mechanism |
US11806011B2 (en) | 2021-03-22 | 2023-11-07 | Cilag Gmbh International | Stapling instrument comprising tissue compression systems |
US11737749B2 (en) | 2021-03-22 | 2023-08-29 | Cilag Gmbh International | Surgical stapling instrument comprising a retraction system |
US11759202B2 (en) | 2021-03-22 | 2023-09-19 | Cilag Gmbh International | Staple cartridge comprising an implantable layer |
US11793516B2 (en) | 2021-03-24 | 2023-10-24 | Cilag Gmbh International | Surgical staple cartridge comprising longitudinal support beam |
US11849945B2 (en) | 2021-03-24 | 2023-12-26 | Cilag Gmbh International | Rotary-driven surgical stapling assembly comprising eccentrically driven firing member |
US11744603B2 (en) | 2021-03-24 | 2023-09-05 | Cilag Gmbh International | Multi-axis pivot joints for surgical instruments and methods for manufacturing same |
US11896218B2 (en) | 2021-03-24 | 2024-02-13 | Cilag Gmbh International | Method of using a powered stapling device |
US11944336B2 (en) | 2021-03-24 | 2024-04-02 | Cilag Gmbh International | Joint arrangements for multi-planar alignment and support of operational drive shafts in articulatable surgical instruments |
US11896219B2 (en) | 2021-03-24 | 2024-02-13 | Cilag Gmbh International | Mating features between drivers and underside of a cartridge deck |
US11832816B2 (en) | 2021-03-24 | 2023-12-05 | Cilag Gmbh International | Surgical stapling assembly comprising nonplanar staples and planar staples |
US11786239B2 (en) | 2021-03-24 | 2023-10-17 | Cilag Gmbh International | Surgical instrument articulation joint arrangements comprising multiple moving linkage features |
US11857183B2 (en) | 2021-03-24 | 2024-01-02 | Cilag Gmbh International | Stapling assembly components having metal substrates and plastic bodies |
US11903582B2 (en) | 2021-03-24 | 2024-02-20 | Cilag Gmbh International | Leveraging surfaces for cartridge installation |
US11849944B2 (en) | 2021-03-24 | 2023-12-26 | Cilag Gmbh International | Drivers for fastener cartridge assemblies having rotary drive screws |
US11786243B2 (en) | 2021-03-24 | 2023-10-17 | Cilag Gmbh International | Firing members having flexible portions for adapting to a load during a surgical firing stroke |
US11998201B2 (en) | 2021-05-28 | 2024-06-04 | Cilag CmbH International | Stapling instrument comprising a firing lockout |
US11877745B2 (en) | 2021-10-18 | 2024-01-23 | Cilag Gmbh International | Surgical stapling assembly having longitudinally-repeating staple leg clusters |
US11957337B2 (en) | 2021-10-18 | 2024-04-16 | Cilag Gmbh International | Surgical stapling assembly with offset ramped drive surfaces |
US11980363B2 (en) | 2021-10-18 | 2024-05-14 | Cilag Gmbh International | Row-to-row staple array variations |
US11937816B2 (en) | 2021-10-28 | 2024-03-26 | Cilag Gmbh International | Electrical lead arrangements for surgical instruments |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3699806A (en) * | 1967-07-14 | 1972-10-24 | Bjorn Weichbrodt | Early detection of damage to machine elements in rolling engagement |
US3857279A (en) * | 1973-05-07 | 1974-12-31 | Raytheon Co | Monitoring and control means for evaluating the performance of vibratory-type devices |
US4423634A (en) * | 1980-07-08 | 1984-01-03 | Cgr | Device for the activation of an apparatus for measuring acoustic emission by detection of background noise |
US4550603A (en) * | 1983-03-29 | 1985-11-05 | Mitsubishi Denki Kabushiki Kaisha | Abnormal noise detector for use in the inspection of gear units |
US4872337A (en) * | 1988-01-29 | 1989-10-10 | Watts Robert J | Nondestructive testing of gears |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3677072A (en) * | 1970-10-30 | 1972-07-18 | Gen Electric | Damage detection method and apparatus for machine elements utilizing vibrations therefrom |
US3842663A (en) * | 1972-12-01 | 1974-10-22 | Boeing Co | Demodulated resonance analysis system |
US4429578A (en) * | 1982-03-22 | 1984-02-07 | General Electric Company | Acoustical defect detection system |
JPS59174732A (en) * | 1983-03-24 | 1984-10-03 | Mitsubishi Electric Corp | Apparatus for judging abnormality of gear unit |
US4782452A (en) * | 1986-08-25 | 1988-11-01 | General Electric Company | Acoustic detection of milling tool touch to a workpiece |
US4931949A (en) * | 1988-03-21 | 1990-06-05 | Monitoring Technology Corporation | Method and apparatus for detecting gear defects |
US5046362A (en) * | 1988-04-26 | 1991-09-10 | Ford New Holland, Inc. | Grain loss monitors for harvesting machines |
US4980844A (en) * | 1988-05-27 | 1990-12-25 | Victor Demjanenko | Method and apparatus for diagnosing the state of a machine |
US5109700A (en) * | 1990-07-13 | 1992-05-05 | Life Systems, Inc. | Method and apparatus for analyzing rotating machines |
US5255565A (en) * | 1991-11-12 | 1993-10-26 | Vibra-Metrics, Inc. | Method and apparatus for monitoring multiple points on a vibrating structure |
US5321365A (en) * | 1993-03-03 | 1994-06-14 | Tektronix, Inc. | Reduced noise sensitivity in inverse scattering through filtering |
US5477730A (en) * | 1993-09-07 | 1995-12-26 | Carter; Duncan L. | Rolling element bearing condition testing method and apparatus |
US5479824A (en) * | 1993-12-21 | 1996-01-02 | General Electric Company | On-line shaft crack detector |
-
1995
- 1995-10-16 US US08/543,711 patent/US5804726A/en not_active Expired - Fee Related
-
1996
- 1996-10-11 AU AU16824/97A patent/AU1682497A/en not_active Withdrawn
- 1996-10-11 WO PCT/US1996/016235 patent/WO1997015044A1/en active Application Filing
- 1996-10-15 WO PCT/US1996/016131 patent/WO1997014940A1/en active Application Filing
- 1996-10-15 AU AU72615/96A patent/AU7261596A/en not_active Abandoned
- 1996-10-16 CA CA002187994A patent/CA2187994A1/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3699806A (en) * | 1967-07-14 | 1972-10-24 | Bjorn Weichbrodt | Early detection of damage to machine elements in rolling engagement |
US3857279A (en) * | 1973-05-07 | 1974-12-31 | Raytheon Co | Monitoring and control means for evaluating the performance of vibratory-type devices |
US4423634A (en) * | 1980-07-08 | 1984-01-03 | Cgr | Device for the activation of an apparatus for measuring acoustic emission by detection of background noise |
US4550603A (en) * | 1983-03-29 | 1985-11-05 | Mitsubishi Denki Kabushiki Kaisha | Abnormal noise detector for use in the inspection of gear units |
US4872337A (en) * | 1988-01-29 | 1989-10-10 | Watts Robert J | Nondestructive testing of gears |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106969826A (en) * | 2017-04-10 | 2017-07-21 | 西安航天动力试验技术研究所 | The calibrating installation and calibration method of a kind of vibrating sensor |
Also Published As
Publication number | Publication date |
---|---|
AU7261596A (en) | 1997-05-07 |
WO1997015044A1 (en) | 1997-04-24 |
US5804726A (en) | 1998-09-08 |
AU1682497A (en) | 1997-05-07 |
CA2187994A1 (en) | 1997-04-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5804726A (en) | Acoustic signature analysis for a noisy enviroment | |
US4931949A (en) | Method and apparatus for detecting gear defects | |
US6925879B2 (en) | Vibration analyzer and method | |
US6801864B2 (en) | System and method for analyzing vibration signals | |
Luo et al. | On-line vibration analysis with fast continuous wavelet algorithm for condition monitoring of bearing | |
US6195621B1 (en) | Non-invasive system and method for diagnosing potential malfunctions of semiconductor equipment components | |
CN103688144B (en) | A method and a system for analysing the condition of a rotating machine part | |
US5313407A (en) | Integrated active vibration cancellation and machine diagnostic system | |
DE69820568T2 (en) | Device and method for analyzing torsional vibrations on rotating parts | |
US4550604A (en) | Abnormal noise detector for inspecting gear units | |
US8438925B2 (en) | Method and arrangement for determining and monitoring the state of a rolling bearing | |
CA2098943A1 (en) | System and method for dectecting cutting tool failure | |
JPH10176949A (en) | Apparatus and method for testing mechanical component using neural network processing vibration data analysis | |
US7444265B2 (en) | Machine and/or monitoring | |
CN110411747A (en) | For determining the rotation speed of the road wheel end of vehicle and the device of vibration | |
JP2001108518A (en) | Abnormality detecting method and device | |
US5483833A (en) | Method and apparatus for monitoring aircraft components | |
CN111060302A (en) | Multi-parameter equipment state comprehensive monitoring and diagnosing device and method | |
Liu et al. | Diagnosis of roller bearing defects using neural networks | |
CN112284720B (en) | Acoustic test-based fault diagnosis method for central transmission bevel gear of aircraft engine | |
CN101072984A (en) | Vibration analysis system and method for a machine | |
KR102219422B1 (en) | Detecting system for measuring operating sounds of washing machine and detecting method for noise defect there of | |
Wändell | Multistage gearboxes: Vibration based quality control | |
KR100440144B1 (en) | Apparatus for in line inspection of transmission and method thereof | |
CN211553263U (en) | Multi-parameter equipment state comprehensive monitoring and diagnosing device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AM AT AU BB BG BR BY CH CN CZ DE DK ES FI GB GE HU IS JP KE KG KP KR KZ LK LR LT LU LV MD MG MN MW MX NO NZ PL PT RO RU SD SE SG SI SK TJ TT UA UZ VN |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): KE LS MW SD SZ UG AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
REG | Reference to national code |
Ref country code: DE Ref legal event code: 8642 |
|
122 | Ep: pct application non-entry in european phase |